Category Archives: Objects

Archeological Textile Discovery in the Stacks: The Research

This is the first post of a four part series.

Discovery in the Stacks

When a collection of Egyptian mummy bandage fragments at the Cincinnati and Hamilton County Public Library was found in an area used to store uncatalogued flat materials, the lab was asked to play a role in providing better stewardship.

Discovered in the stacks: A mounted collection of six Egyptian textile fragments that date to the Ptolemaic Period (around 300-30 BCE), recto

Mummy bandage wrappings are rare finds in public libraries, and discovering that the materials where uncatalogued was not terribly surprising; having the specialized knowledge to catalog such a unique object may not have been available at the Public Library at the time of the acquisition. With no identifying marks, and mounted to an aged board, the provenance of these objects are unfortunately unknown.

Collection suffered from a lack of storage housing without identifying information, found by staff performing a collections inventory, verso

Concerned about their overall safety of the fragments, as they were attached to a brittle board that could potentially chip and break if mishandled, it was clear that a solution for long-storage was needed. Therefore, the items were brought to the lab for a comprehensive examination.

As a book and paper conservator with little knowledge of archeological textiles, the first step towards selecting a preservation solution was to better understand the fragments and conduct research on how to care for them. Because of the age and fragility of the items, my goal became to find a storage solution that could facilitate access while limiting handling of the actual objects themselves.

Examination

In order to conduct research, the condition of the individual fragments were fully examined with a variety of illumination techniques to better understand their composition. The collection was photographed with a DSLR camera in normal illumination, raking light, infrared, and ultraviolet fluorescence. The images revealed valuable information such as the possible types of adhesives used in mounting, the degree of linen loss, as well as the type of pigment applied to the linen.

Creating the photographic documentation also allowed me to reach out to other scholars, to inquire about their history, while providing high quality images.

Types of Photography Performed During Examination

Normal Illumination – General reference image
Raking Illumination – Shows losses in linen, brown paper linings, and breaks in board
Infrared Imaging – Reveals inscriptions hidden along stains
Ultraviolet Fluorescence – Exposes differing types of adhesives

Normal Illumination – Overall images were taken of both the front and back of the mounting board. Normal illumination images serve as general reference photographs, representing how we perceive the object in normal room lighting.
Raking Illumination – Reveals the surface topography, showing breaks, tears, and losses in both the linen fragments and the mounting board.
Infrared Imaging – A modified DSLR camera and specialized filters remove visible light and capture longer wavelengths than the human eye can see, revealing the carbon-based writing while allowing the stains to disappear, making the writing more legible.
Ultraviolet Radiation– Ultraviolet radiation produces a fluorescence that readily shows the two differing types of adhesives used to adhere the fragments onto the backings. The first adhesive used to adhere the fragments to a brown paper backing does not fluoresce, while an adhesive that is smeared onto the face of the backing board does fluoresce. This indicates that the fragments were adhered at different times to the two different substrates, first being adhered overall to a paper backing, then later mounted onto the board.

Research

Using the high-quality images described above, I reached out to experts in Egyptology and papyrology at the University of Cincinnati Classics Library and the University of Michigan to learn about the history of the objects. Right away, I was given extremely detailed information by generous colleagues.

One of the first surprising things I learned is that two of the fragments were oriented upside down. So in their mounted format, they were not properly represented. Perhaps even more exciting was the discovery that three fragments were able to be attributed to a priest named Wennofer! (There will be more about the history of the pieces in the second part of the series, stay tuned.)

Of Parts and Pieces

It was serendipitous that during my research one of the contacts I was put in touch with was Dr. Ann-Katrin Gill from the University of Leipzig. Dr. Gill happened to be in the midst of a larger project titled: Of parts and pieces: unearthing, reassembling, and documenting papyri and linen objects in US libraries. As you can imagine, she was thrilled to receive the treatment documentation of the Public Library’s fragments to add to the collection. We have hopes that should any other fragments belonging to these be discovered, perhaps they could become reunited.

Materiality

The Egyptian mummy bandage fragments, or cloth shrouds, are also referred to as archaeological linen textile fragments. I learned the following about the materiality of the fragments.

Inscriptions

Fragments contain either formal hieroglyphs (using pictorial characters) or cursive hieratic script (which is a later Egyptian shorthand writing system used by scribes). It was determined that the fragments likely date to the Ptolemaic Period (around 300-30 BCE) based on the writing style used during that time period.

Inscriptions are written in black ink with a reed or rush pen, referred to as rush ink. The ink appears to be typical of the time period, most likely carbon-based with a gum binder. The fragments when viewed though infrared imaging (see slide show above) shows the carbon in the ink absorbing infrared radiation, making the ink appear dark black in infrared images, while the organic staining drops out of the image .

20th Century Alterations

Lined with Brown Paper

At some point in the fragments’ history, the textiles were lined on the back in an acidic machine-made brown paper (reminiscent of brown craft paper tape). If you look carefully in the raking light image (see slide show above), you might notice the brown lining paper poking through losses in the textiles as a slightly darker shade of brown than the board support. Under UV fluorescence (see slide show above), the adhesive used in conjunction with the brown paper lining does not fluoresce. This adhesive was found to be readily water soluble and possibly a gum-based adhesive.

Trimmed Edges

You might notice the fragments are cut into odd shapes, likely they were trimmed to remove frayed ends and damaged parts. There’s no way to know if the fragments were trimmed before or after they were lined with the brown paper lining, however the edges are fairly consistent with one another. One could make the case they were trimmed at the same time.

Mounted to a Board

After lining, these fragments would have then been mounted to a board, with two identified as upside down (oops)! Faint patterns on the back of the paper board resemble off-setting from wood, likely caused by a wooden backing board in a frame. If these assumptions are correct, it’s my guess that the fragments were mounted then framed for the tourist trade, with the frame now lost.

Condition

Being mounted on an aged, unsupported, brittle board put the fragments at risk of breaking along with the board. Since the board already contained cracks and breaks along the edges, this concern felt urgent.

Despite the precarious storage and concerns surrounding the fragments being exposed to the elements, the textiles themselves appeared in fairly good condition for being over 2,000 years old! Viewing the fragments in raking light (see slide show above) reveals a considerable amount of linen loss throughout the textiles. However, it doesn’t appear that these losses were a recent incident in the past half century. The losses were likely present when the fragments were lined with brown paper backing.

Next Steps

Next steps were to prepare the objects for safe keeping in long-term storage. To do so, required research on possible treatment options to safely store the items in their proper orientations. Also, knowing that not all fragments belonged in context with each other was further justification to split the collection into separate parts. Read on for more discoveries in this preservation journey!

To learn more, check out the other three posts in the series. (Links will be made live as the installments are released.):

History – Historical information provided about the Egyptian inscriptions
Treatment – How the materials were treated after learning about their content
Storage Solutions – Individual solutions for separated fragments as well as storage as a collection

Acknowledgements

Katherine Davis, Lecturer in Egyptology in the Department of Middle East Studies at the University of Michigan
Suzanne Davis, the Associate Curator and Head of Conservation at the Kelsey Museum of Archaeology at the University of Michigan
Dr. Ann-Katril Gill at the University of Leipzig
Marieka Kaye, Harry A. and Margaret D. Towsley Foundation, Head, Conservation & Book Repair, University of Michigan Library
Obie Linn, Textile Conservator at the Cincinnati Art Museum
Ann Wuertemberger, Catalog Librarian at the Cincinnati and Hamilton County Public Library
Meredith Montague, Textile Conservator at the Museum of Fine Arts Boston

Ashleigh Ferguson Schieszer – Special Collections Conservator and Co-Lab Manager [CHPL]

Just Peachey: Jeff’s Conservation Hand Tools Workshop

For one week in July, 2024, the Preservation Lab busted out belt sanders and opened the elbow grease to host a workshop taught by Jeff Peachey, learning all about making, modifying and maintaining our own hand tools. Jeff, a book conservator and master tool maker, brought all kinds of fun machinery and exciting tools for us to learn from and use. From hacksaws to pencil sharpeners, Jeff’s tool collection is inspiring, and we all left the week with some amazing new additions to our bench.

A set of raw materials each participant received at the beginning of the week to shape into their own personal new tool set! Credit: Jeff Peachey

Delrin

We started the week off working with Delrin. Delrin, an acetal homopolymer plastic that appears similar to Teflon, was easy to shape with saws, files, scrapers and silicon carbide sandpapers. We burnished with sanding pads and polishing paper.

We started off with Delrin rods that we shaped into delicate heras. Heras are thin tools with spatula-like ends that Jeff says are great for delicate prying, inserting small amounts of adhesive, and lifting tape to name a few of the uses for this handy little tool.

We made a rough cut of the shape we wanted with the bandsaw, then smoothed everything out by going through a sandpaper grit progression. Once we’d crafted these, many of us tried our hand at making versatile Delrin folders. With lots of filing and sanding, this malleable Delrin was easy to manipulate into a variety of tool shapes, and no two tools were exactly alike.

A Delrin hera created by Holly. Credit: Holly Prochaska

Ashleigh uses a saw to shape her Delrin. Credit: Ashleigh Ferguson Schieszer

Jeff demonstrates how to work with Delrin. Credit: Ashleigh Ferguson Schieszer

Knives

Our second and third days with Jeff were all about M2 steel knifes, both sharpening them and making them. We learned all about using Jeff’s sharpening system and honed down our own Peachey paring knife. We also made two lifting knives out of Starrett 32T hacksaw blades by grinding the blades down on a belt sander and then taking them through the sharpening system with microfinishing films to achieve a sharp edge.

A progression of 3M Microfinishing Films adhered to a glass plate for sharpening. Credit: Ashleigh Ferguson Schieszer

A Peachey knife next to a sharpening system on marble. Credit: Holly Prochaska

Sharpening knives turned out to be a complex process – a burr must be formed at each grit gradient before moving on to the finer grind, and if your hand position is off this could take some time. Furthermore, the wrong hand position could yield a bevel angle too big or too small on the plane of the knife. We aimed for an ideal bevel angle between 11 and 13 degrees.

Specular light shows a raw bevel angle during sharpening, before it has been ground smooth on the first grit progression. Credit: Ashleigh Ferguson Schieszer

Additional Knife Features

Some people chose to add grooves into the sides of their paring knives for a more comfortable grip; some of us chose to wrap our knife handles in leather and make horse butt sheaths for them. Matt was the bravest of all and mounted a custom carved wooden handle to his left-handed paring knife.

Catarina finishes a groove on the belt sander to make it more comfortable to hold. Credit: Ashleigh Ferguson Schieszer

Grained Book Cloth

We also went over creating 19^th century grained book cloth on our third day. Through toning, glazing, then pressing with a die that has your desired pattern, it’s possible to create book cloth that mimics the textures of 19^th century book cloth. After going through the time-consuming process, the idea of making up large batches at one time became appealing.

Jeff demos coating a cotton muslin with acrylics and paste, pressing the coated cloth with screens to add a grain, then finishing with an egg glare. Credit: Ashleigh Ferguson Schieszer

Jeff’s samples he made ahead of the workshop

Wood and Bamboo

On our fourth day we learned all about wood and bamboo carving. Using a chisel, wood plane or hatchet, we created the crude shape we wanted our wooden tools to take. Then we got to work sanding until the wood was smooth, and created a more precise shape. A final finish with nose grease or wax was optional.

Jeff’s workbench after his wood carving demo. Credit: Jessica Ebert

Bamboo is great for creating thin, flexible tools. With our pieces of wood most of us created folders, but a few decided to make wooden handles for their knives or straight edges. Personally, my favorite tool I created the whole week was my wooden folder I made, though it was probably the hardest to create. I had to shape it using a small hatchet, then sand it for quite some time before it took on the shape that I wanted.

Jeff demonstrating how to carve our piece of wood using his proprietary bench hook. Credit: Jessica Ebert

Holly chiseling a piece of bamboo using a generic bench hook. Credit: Jessica Ebert

My new wood folder. Credit: Nicole Browning

Stainless Steel

Our final day with Jeff was spent shaping stainless steel tools, which to me was the hardest material we worked with, as it took a lot of patience with the belt sander, and the metal was prone to heating up quickly and potentially burning our fingers. We created straight edges or 45 degree triangles, and even learned how to drill holes and attach small handles to these tools. We also had a thicker piece of stainless steel for creating a folder, which I found the most challenging of all. The stainless steel was harder to manipulate, understandably, and much less forgiving than the wood or Delrin.

Two stainless steel folders made and engraved by Jessica. Credit: Jessica Ebert

We ended the week by testing the sharpness of our blades and doing a little show and tell of our favorite tools that we made. It was so amazing to see all the different tool shapes people were inspired to make based upon what they most used in their work.

My assortment of tools I made at the workshop. From left to right: bamboo lifters, two Delrin Heras, two lifting knifes, a Delrin folder, a paring knife and its sheath, and a wooden folder. Credit: Nicole Browning

Learning from Jeff was such an amazing opportunity, and it was so eye-opening and world-expanding to learn that so many of these tools we use every day can be created from our own hands.

Jeff did a fabulous job tailoring his tool-making workshop to the the availability of machinery and other logistics of our facility. As a result, the actual tools made in our version of this workshop vary from other workshops Jeff has taught, empowering us to keep making tools with our space in the future. If you ever have the chance to take this workshop, we highly recommend it!

Be sure to check out this Instagram post by Jeff featuring all of us showing off our favorite hand tools we created!

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A post shared by Jeff Peachey (@jeffpeachey)

Nicole Browning [CHPL] – Conservation Assistant

Preservation and Exhibition: DAAP Library’s Teaching Collection & Upcoming Gallery Talk (12/5)

For the past six months, Jessica and Catarina have been working with the DAAP Library on housing their Teaching art collection, including prior acquisition and newly acquired items. This collection consists of different art prints on paper, print plates and manuscript parchment leaves in need of long-term housing. In addition to housing, this collection is used for teaching in a classroom setting and for exhibition.

Most of the collection only requires simple matting systems, but some require more intricate matting systems such as the copper plate along with its print, a project mentioned in a previous blog post entitled How many magnets is too many magnets!?.

As some of the items of this collection were being prepared to go on exhibit, we had the opportunity to create mounts for other items, such as two parchment scrolls that were included in the exhibit. This was a fun project to work on, as it required us to create a support that would secure both scrolls, while providing an elegant solution for display.

To start, Jessica created a very rough small model with mat board, polyethylene strapping, and paper (as we always do with anything new in the lab, we do love model making!!). The model provided us the visual example that we needed to create the mount for the two scrolls.

Scroll mock-up — Small rough model created by Jessica

With the model in mind, we were able to engineer a good system that would provide support for the scrolls and could be used for display. The scrolls were supported with foam rolls on the inside for the rolled ends, and secured with polyethylene strapping that only touched the foam. The sections of the scrolls that were going to be displayed were also secured with polyethylene strapping that wrapped around the mat board support through slits in the board. At the bottom, the mat board extended outwards creating a small shelf to support the end of the scroll.

Two scrolls mounted to mat board with strapping — Scrolls mounted and ready for exhibition.

A small “shelf” of mat board supports the bottom of the scrolls.

Catarina adjusting the strapping on the mount.
A small “shelf” of mat board supports the bottom of the scrolls.
A small “shelf” of mat board supports the bottom of the scrolls.
The foam rolls support the inside of the scrolls and are secured with polyethylene strapping.
Jessica securing the foam roll that supports the scroll.

As a result of all the mounting and matting we did for the Teaching Art collection and for the scrolls, each item is currently on display at the DAAP Library entrance case:

Image of the exhibit — Current display at the DAAP Library featuring the Teaching Art Collection.

Close up of the scroll mounted on exhibit — A close-up of the scroll mounted on exhibition.

If you are interested in learning more about our preservation considerations for exhibition of this collection, Catarina and Jessica will be giving a short gallery talk on Tuesday, December 5th at 1pm, at the DAAP Library entrance on the 5th floor.

Catarina Figueirinhas [UCL] – Assistant Conservator

How many magnets is too many magnets?!

Recently Jessica and I started working on a series of special collection items from UC Libraries’ DAAP Library. These were recent acquisitions specifically bought to be used as a teaching collection within the DAAP Library. Most items are small prints and single manuscript leaves that need to be matted for exhibition and prepared for handling during class. We have been working on these in small batches since it is a much larger collection that keeps growing.

Most of the items we have received so far have been very straightforward matting projects, however we encountered one that was puzzling and fun to work on. We received this item: a proof print accompanied by its very heavy, copper engraving plate. The print was adhered to a paper brown envelope with no information and the copper plate was also unhoused.

Image of print on the left and the copper plate on the right, with a photography target below — Proof print (left) and engraving plate (right) before treatment and housing.

The curator of the collection wanted both items to be housed together and housed in a way that would allow students to touch the items, and also be able to use them for exhibits. We decided that both items would be matted individually, and then housed together in a thin corrugated clamshell box. The most challenging part would be to create a matting system that was strong enough to secure the very heavy copper plate and elegant enough to be used for exhibition.

The print itself received minor treatment, with the backing envelope being removed and the print housed in a polyester L-sleeve mounted with photo corners.

An image of the matted print — Print housed in a polyester L-sleeve and matted with photo corners.

With the engraving plate, I needed to figure out how to create a matting system that was strong enough to hold the copper plate in place, especially if used for an exhibit where it may be propped at a slight angle. After considering some options, I created a sink mat that would secure the plate halfway, and then the rest of the sink mat would be adhered to the window mat so the copper plate, resting on a polyester tray, could be pulled out of the mat easily. How would I keep the matting system closed? ….with magnets, lots of magnets! For this project I used 24 rare earth magnets.

Image of the matted copper plate — Copper engraving plate housed in a specialty sink mat with magnetic closures.

Diagram of the magnet locations in the sink mat — Matting system for the copper plate – a sink mat, half attached to the back mat and half attached to the window mat, all secured closed with magnets.

Copper plate partially removed from the matting system with a box highlighting the location of the polyester film tray — Copper plate slightly removed from the matting system by the polyester film tray.

This was a fun project to work on. After using 24 magnets and breaking a few in the process, the copper plate was securely housed in the sink mat, while also able to be propped up for exhibition and handled for teaching.

Image of the matted print and copper plate side by side with photography target below — Before treatment

Catarina Figueirinhas [UCL] – Assistant Conservator

Conservation photography by Jessica Ebert

Challenge of a Millennia: How to Store an Oversized Clay Tablet?

The University of Cincinnati’s Archives and Rare Books Library owns a few cuneiform tablets that date around the 1^st century BCE. Most are small enough to fit within the palm of your hand. However, the clay tablet in question measures 14 inches (W) by 14 inches (T) x 4.5 inches (D) and weighs roughly 40-50 lbs.

Assyrian cornerstone during surface cleaning

More accurately, it is thought to be an Assyrian cornerstone that dates between 860 and 824 BCE. It is described in the catalog record to be from the ruins of Calah (near Ninevah) on the Tigris River. It is likely the cornerstone of a temple or palace erected by Salmanser III, king of Assyria. The provenance of how the University acquired the tablet is uncertain.

A translation of the cuneiform writing reads, ““Salmaneser, the great king, the mighty king, king of the universe, king of Assyria, son of Asurnaserpal, the great king, the mighty king, the king of Assyria, son of Tukulbi-Ninib, king of the universe, king of Assyria, and indeed builder of the temple-tower of the city of Calah.”

Front, Raking Illumination with Reflectance Transformation Imaging (RTI) by Jessica Ebert
Front, Normal Illumination by Jessica Ebert
Back, Raking Illumination by Jessica Ebert
Back, Normal Illumination by Jessica Ebert

After surface cleaning and digitizing the cornerstone, finding suitable storage for an Assyrian cornerstone tablet seemed like a straightforward task in the beginning. I thought, “Let’s get it off the floor, house it, and protect it from dust!” No problem, right?

But once we got the item back in the lab, the weight of the object combined with its fragility proved more of a challenge after Chris, Holly and I began thinking about how the object would be retrieved from storage and how it would be handled. Rather than being stored in specialty shelving (such as items might be in a museum), this item was a library item. We needed to fit the tablet amongst archival book shelving. We were also faced with the prospect of transporting the cornerstone up and down a flight of stairs from the secure rare book storage. There is no easy elevator access! And finally, once it was put in an enclosure, how would a librarian get it out to show researchers and students?

We decided on an industrial case with wheels that could be transported and stored anywhere. I knew I wanted a device with handles to pull the object in and out of the case, but immediately decided against the idea of ratchet straps. The threat of fracturing would be too great if the ratchet straps were over-tightened.

After careful thought (and the creation of mock up solutions!) the following custom design was created in five stages:

1. A waterproof, shock-proof rolling Nanuk 950 case (similar to a Pelican case) was purchased.

2. The interior was customized with foam and supports.

3. The lid was fashioned with a Tyvek pillow screwed to the top with an interior Coroplast sheet.

4. The cornerstone was wrapped around all sides in a foam sheet with four flaps.

5. A cloth wrapper with custom handles was sewn to support the tablet during insertion into and retrieval from the case.

In addition, life-size surrogate photographs were printed by Jessica Ebert and stored in a polyester sleeve within the case. These images may prove even more useful during exhibition or teaching than seeing the actual tablet as they were captured with raking light that beautifully highlights the cuneiform writing. They could even be used as an alternative to handling the heavy tablet.

To help guide future librarians on how to handle the cuneiform tablet in the future, handling instructions were provided, a handling video was created, and a QR code of the video was pasted onto the case. Check out the video below.

I was appreciative to have been able to hearken back to my object’s conservation experience working at the Musical Instrument Museum. My prior experience helped guide me to dust the tablet and store surface cleaning samples, however, this was a project that took me out of my library conservation comfort zone. The knowledge required to house such an object (and the amount of textile sewing used to create the cloth wrapper!) gave me even more appreciation for the work objects and textile conservators do to preserve our oversized and heavy materials – especially when transporting and taking them on and off display!

Ashleigh Ferguson Schieszer [CHPL] – Rare book and paper conservator

Video by Jessica Ebert

Our New Website is LIVE!

Check it out: www.thepreservationlab.org

No-stick protective Mylar jacket for CD compilation

The purpose of this blog is to show a relatively easy long-term solution for strengthening and protecting the packaging for shallow banker’s box enclosures. There are two notable benefits to using this solution. The first being that in some cases little to no repairing needs to be done to damaged parts of the box and the second is at no time does any adhesive come into contact with the original piece. I have developed this system down to a science. If I make my measurements correctly, from start to finish, the lid and base jacket can be made from the custom stencils in about 180 minutes.

Ultimately you’ll be cutting 2 pieces of 4 mil Mylar to the following dimensions (W+thx4+4inches x H+thx4+4 inches) with the help of stencils.

To make a stencil I just place the lid in the center of the wastepaper and adding about 1mm all around, trace the width and height. Add 1 wall thickness all around followed by 1 wall board thickness all around then another wall thickness all around. Draw each of these added lines all the way to the edge of the paper.

You may notice little adaptations to the tabs that will be cut out of the Mylar. I make the tabs on opposite sides to create symmetry. Here is a close-up of one.

After scoring and cutting out the Mylar to match the pattern, fold on the lines using either a ruler and bone folder or your fingers.

When you are all ready, place the box in the center of the Mylar sleeve and place double stick tape where the tabs will secure the corners. Start with the outside corners first.

One of the great qualities of this protective wrapper is that it can cut out repair time by the virtue of the strength of the wrapper itself.

Secure the rest of the outside, then inside corners, and we’re done!

Now it’s time to enjoy the music.

Chris Voynovich (CHPL) — Senior Conservation Technician

The Preservation Lab…in the news

Check out this new article about the work of the Preservation Lab by our collaborator Melissa Norris, with assistance from Ashleigh Schieszer, Jessica Ebert, and Kevin Grace at https://libapps.libraries.uc.edu/source/preserving-taft/.
Isn’t Preservation just so cool!

Ashleigh Schieszer works on Taft’s maquette. (Photo credit Jessica Ebert)

And for our loyal followers a bonus image of the housing of the William Howard Taft letters…

Encapsulated binding by Chris Voynovich, design by Ashleigh Schieszer (photo credit Jessica Ebert)

Polyester Encapsulated Page Binding *Part Two: The Components

This past year, the Preservation Lab was recruited to conserve the Public Library’s scrapbook of Althea Hurst.

Scrapbooks are complex library materials. They are conduits to stories told through the use of collections of ephemeral materials (a.k.a. materials meant to be thrown away and not meant to last), such as newspaper clippings, letters and postcards, and maps.
Due to their collection of content, scrapbooks usually are bursting with problematic preservation issues. Often, fragile pages hold stiff, brittle, or heavy parts that are adhered and folded. Components are frequently found layered and overlapping. These parts are filled with information and are intended to be handled and experienced; however, as the parts become fragile with age they are nearly impossible to touch without causing damage.

Althea Hurst scrapbook with adhered components, before conservation treatment.

In most situations, it’s often best to digitize an object and protect it by storing it in an enclosure. I often recommend patrons reference the digital copy rather than handling the physical object. Alternatively, if an object will be handled (and the importance of the object warrants conservation treatment) another solution is to support the pages by encapsulating them within clear polyester film. The polyester film encapsulations are then bound into an encapsulated page binding. This format help preserve the parts in the author’s intended order, however, this course of treatment must be carefully considered as it can sometimes be an invasive solution if disbinding is required.
In the case of the Public Library’s scrapbook, the scrapbook had been previously reformatted by a prior owner due to its poor condition. At some point in the object’s history, each page and cover had been separated from the binding and stored in non-archival plastic sleeves to protect the pages from breaking. Oversized rubber bands held the album in two manageable stacks.

Althea Hurst scrapbook as received, before conservation treatment.

When the library received the object, the pages were in dire need of stabilization before it could be digitized and also needed improved storage. Because the scrapbook was already disbound into pieces (even the covers were detached) an encapsulated page binding was selected as the most fitting option for storage. The local historical importance of the scrapbook warranted full treatment.

Althea Hurst scrapbook, view of inside upper cover and first page, before treatment.

Being a novice in encapsulated page bindings, I reviewed a few binding structures and wrote about my discoveries here. I settled on constructing a modified screw-post binding to fit the needs of the Public Library’s scrapbook.
Now armed with a direction for constructing the album structure, the next challenge was:
How do I encapsulate a scrapbook that houses a variety of adhered material, such as pamphlets, postcards, letters, maps, and more, and still make the parts accessible?

Encapsulation Techniques

To determine a solution for preserving the arrangement of parts, I researched various methods of welding paper, polyester film, and spun bond sheets of polyester webbing to encapsulated pages. I compiled the methods into a model binding for reference in preparation for treatment.

Below are a list of experimental solutions for housing and encapsulating the scrapbook’s multiple parts. Many of the techniques were utilized in the final treatment, as you will see in the photographs below.

1. Traditional Encapsulation

This technique was used to fully encapsulate scrapbook pages overall, or to encapsulate removed single sheets that needed extra support
Pages or parts were sandwiched between polyester film and ultrasonically welded on all four sides:

Gaps along the corners were left to encourage air exchange and to prevent buildup of acidic off-gassing of the historic materials.

2. U-sleeve: welded on 3 sides for top edge access

Useful for items that may need to be handled outside of the plastic and are thick or heavy

Hinged U-sleeve allows access to the card as well as stability for storing next to the envelope.

3. Polyester sheets welded on two parallel sides

Could potentially be helpful in the right circumstance for thin items that may need to be handled outside of the plastic. Two access points are helpful for reducing static cling and suction, however, items may accidentally slide out more easily (see next technique for a similar yet preferred method).

4. L-sleeve: welded along the left side and bottom edge (in the shape of an “L”).

Alternative technique to the U-sleeve for storing parts that may require future handling.
An L-sleeve can be welded to one side of an encapsulated page binding with an ultrasonic weld after the L-sleeve is created.
For thicker materials, an additional small weld along the bottom right edge is helpful to prevent materials from sliding out of the sleeve when the page is turned.

5. Spot welds: heat or ultrasonically welded

Technique used to hold materials in place and prevent them from sliding within an encapsulation

6. Thin overlapping attachments

Overlapping parts that need to be kept in a specific composition can be carefully removed from the page by a conservator and individually encapsulated. The encapsulated components can then be welded to the upper sheet of the polyester page using a variety of techniques to preserve the original orientation.
Using these techniques allows access to all the components on a page that would otherwise be inaccessible in a traditional encapsulation, and keeps the author’s intended composition.
Parts must be oriented and welded to the upper sheet of polyester before creating the finished encapsulated page, i.e. before encapsulating the lower sheet of polyester to the upper sheet.

7. Hollytex hinge

A strong synthetic hinge (made from spun-bonded polyester) that is welded to the clear polyester sheets with ultrasonic welding.
Useful for easily viewing the front and back of overlapping parts or loose bits.

Detail of Hinge

Overlapping Components, Before Treatment:

Hinged Overlapping Parts, After Treatment:

8. Paper Hinge

Usu Mino tissue is welded in between two sheets of polyester
The extended Usu Mino hinge can then be brushed with paste and adhered directly to a paper leaf.
Useful in other applications, for example preserving loose components in paper textblocks, such as pressed flowers or handwritten notes.

9. Polyester four flap attachment

For small but thick objects
To secure thin components with multiple parts on top of an encapsulated page while still allowing full access

10. Paper spacers

Strips of acid free paper can be placed within an encapsulation to prevent smaller components from moving within larger encapsulated pages.
The paper space holders are visually pleasing so the viewer is not distracted by the page below.
Static holds thinner sheets in place
Thicker textblock leaves may need to be spot welded in-between the document and the paper strip

11. Stiff support leaf with cloth hinge

To support heavy page encapsulations AND/OR include heavy components in pockets on a strong page within the binding
Constructed out of 2-ply mat board, PVA, and Canapetta cloth

Before Treatment:

After Treatment:

12. Stiff flyleaf to support encapsulated pages when laying open

Constructed out of 4-ply mat board, PVA, and Canapetta cloth
The stiff flyleaf contains a smaller hinge than the interior support leaves

*Bonus Experimental Technique:

13. Welding polyester film to Vivak

Even the cover contained an attached component!
As per a request by the curator, the original cover was incorporated into the new binding with reversible methods. The original cover was hinged into a sink-mat package that was sandwiched between a cloth covered mat and a sheet of Vivak.
After a bit of experimenting, a polyester L-sleeve was ultrasonically welded to the Vivak “pastedown” so the original arrangement could be preserved

Before Treatment & After Treatment:

A flyleaf of polyester film was hinged onto the “pastedown” to protect the attached component from being abraded by the edges of the textblock leaves:

Two volumes, after treatment:

Final challenge: how to manage the scrapbook’s large treatment effectively and efficiently.

To read about our collaborative treatment workflow, please see the next upcoming installment: Polyester Encapsulated Page Binding *Part Three: The Workflow.

Ashleigh Ferguson Schieszer (PLCH) — Conservator, Conservation Lab Manager
Photographic Documentation – Jessica Ebert (UCL) – Conservation Technician

Nineteenth Century Buddhist Religious Treatise

In August of this year, the Lab received a Palm leaf book from Archives and Rare Books library during one of our usual monthly meetings. This item was brought to the Lab to receive a new enclosure for a better long-term preservation storage and easier access. Along with a new enclosure, the Lab was asked to create two surrogates of one of the original Palm Leaves for classroom use. Under the direction of Ashleigh Schieszer, lab conservator, technician Chris Voynovich constructed the housing working closely with Catarina Figuierinhas who created the surrogate leaves.

Creating Surrogates

In order to create an accurate surrogate of one of the Palm leaves, the Palm leaf book was taken to the University of Cincinnati Digitization Lab to be photographed with a PhaseOne Reprographic System. This system includes 60 MP PhaseOne digital back, DT RCam with electronic shutter, Schneider 72 mm lens, and a motorized copy stand. At the digitization Lab, one of the Palm leaves was digitized, recto and verso. The collaboration between labs allows the Preservation Lab to obtain a great quality image of a Palm leaf to print a high quality surrogate.

Once the Preservation Lab received an image with enough quality to work with, the process of creating a surrogate started.
In order to create a surrogate, it is important to have in mind several different aspects such as the purpose of the surrogate and the physical characteristics of the original object (texture, thickness and colors). When thinking about the purpose of the surrogate one has to answer questions such as: Is the surrogate going to be displayed or handled? If so, how? Behind a glass case? Will it need a presentation enclosure?
In this case, the purpose was for the librarian to be able to show a “real” palm leaf page without having to actually handle the original fragile leaves. Also, having a surrogate of a palm leaf would allow patrons and scholars to handle a replica of an original object without having to unwrap and open the book.
Our goal was to create two surrogates; one in color, true to the original Palm leaf page; and another black and white, allowing the writing to be read easier.
Since we wanted to create a surrogate as identical as possible to the original, it was necessary to study the original object’s texture and thickness, as well as consider specific details such as gilt edges or punched holes.
The first step was to select several papers to test for printing. Selected papers had a similar texture and thickness to the original Palm Leaf and/or were selected because they contained a handy ICC profile.
Once the papers were chosen for texture, thickness and color profiling, the image obtained from the Digitization Lab was enhanced in Adobe Photoshop CC 2015 and several surrogate samples were printed using a P7000 Epson Printer pigmented ink jet printer.

Middle holes were punched with a Japanese hole punch.

Surprisingly, papers containing ICC profiles did not necessarily produce a more accurate color representation.
Finally, after several trials and errors, a different paper was chosen for each surrogate. The colored surrogate was printed on an archival UltraSmooth Fine Art Epson paper. The black and white surrogate was printed on an acid-free Curtis Brightwater Artesian white smooth paper.

Edges of the colored surrogate were pained with iridescent gold acrylic paint.

Once the surrogates were printed and cut to the exact dimensions, the final finishing touches were made. On both surrogates, the middle holes were punctured in the same fashion as the original palm leaf. For the colored surrogate, the edges were colored with an iridescent gold Golden High flow Acrylic. Once the surrogates were complete, the process of constructing an enclosure for both the surrogates and the original object began.

Constructing a new enclosure

I’ve heard the joy should not be in the finished product but in the process. I have to say I agree with that theory. I love receiving a challenge like this and pounding out a solution. This particular enclosure had many facets which turned out to be exciting as well as rewarding to problem solve together with lab staff.

Using a structure engineered by our lab conservator, first, I created a double-sided sink mat with two open windows to display both sides of the two surrogates. Rare earth magnets were introduced as fasteners to hold the objects secure inside each mat. The surrogates are supported and viewable through a Vivak and polyester transparent L-sleeve, which is removable. The Vivak and polyester sleeve was welded together on the lab’s Minter ultrasonic welder.

Volara supports were constructed to cradle the book so the gilding would not touch any abrasive surfaces, and so there would be a support for the cover once opened. The surrogates help provide information to patrons without causing wear and tear on the fragile book through handling. Originally, we considered storing the surrogates in a tray below or above the book to conserve shelf space, however by arranging the mats next to the object, they could immediately be on display when the enclosure is opened. I am pleased with the outcome. It is now possible to enjoy all the parts of this amazing work within the enclosure itself while minimizing the opportunity for damage, as well as providing a “wow!” factor.

Final enclosure with the original palm leaf book and surrogates.

Catarina Figueirinhas (UCL) — Senior Conservation Technician

Ashleigh Schieszer (PLCH) — Book and Paper Conservator

Chris Voynovich (PLCH) — Conservation Technician

Photo credit: Jessica Ebert (UCL) — Conservation Technician