Showing posts with label paper conservation. Show all posts
Showing posts with label paper conservation. Show all posts

Friday, December 2, 2016

When Was the Last Time You Folded a Map?

Our graduate intern, Emilie Duncan, has taken on the task of wrangling a "map stash" in our Special Collections Library.  The stash had accumulated over the years, and consisted of many, many maps and broadsides that were too fragile or damaged to be sent to the flat file drawers with the rest of the collection.

Thanks to all sorts of progress with technology we have GPS in our phones or car and these devices can talk us through the miles to our destination.  But way back when, people relied on printed maps to get them from point A to point B.  Travel maps had to be comprehensive enough so that travelers had the information they needed, but also small and light enough to be convenient to carry.  Travel maps might come with a pamphlet (like this one) explaining features along the way or be just a single sheet of paper.  In either case, the folding and re-folding of a map can take a significant toll, causing tears and necessitating conservation intervention before a map can be sent back to its home in the stacks.

This map and pamphlet, Lloyd's Official Map of the State of Virginia was published in 1872, although the map itself was first published in 1861.  We have two other copies of this map without the pamphlet, so in consultation with the curator of Virginiana, we decided to keep the map with the pamphlet and work on getting the map back into a condition where it could be easily folded.

A standard approach is to begin with overall humidification and flattening of a document so that the tears can be mended flat.  The overall treatment did result in a lot of progress for this map, but there were still some stubborn creases that required additional humidification and flattening.
For local treatment, we use pieces of Gortex, layered with damp blotter to provide just enough humidification to soften paper in the area around the crease and then drying under weights so that everything dries flat.

Best practice is to start in the middle where the creases are often most stubborn and then work out toward the edges.  Once the piece is flat, you can re-assess the tears and start lining up the roads, rivers and mountains that are out of kilter.

It can be tremendously satisfying to see something that was torn and wrinkled become smooth and legible.  That said, we are now facing the task of re-folding the map to make it fit the format of the pamphlet that it was published with. It may seem counter-intuitive, but we do want the next reader who uses the
pamphlet to be able to use it as the publisher intended, although we are considering putting some fe-folding directions in the housing for those who have never used a paper map.

Friday, September 23, 2016

Introducing Emilie

Hello! My name is Emilie Duncan, and I am the new graduate book conservation intern in Eliza’s lab at UVa. I am a third year fellow in the Winterthur/University of Delaware Program in ArtConservation, and as such, will be completing a yearlong internship here. Designed as a practical, hands-on follow up to my first two years, the internship will involve treatment of both special collections and circulating library books and archival documents, participation in general preservation activities such as exhibit prep and pest management, and generally getting my feet wet with book conservation in the “real world.”

At the close of my third week here, I already have lined up some exciting and fascinating projects. Three weeks spent “lining up” projects? You might think I have not been using my time wisely, but there is a lot that goes into a conservation treatment before the actual treatment even begins.

                The first step is careful examination and consideration of the object at hand, including its materials, construction methods, and current condition problems. All of this information is necessary to plan out a treatment that will effectively and safely stabilize its condition and make it accessible to researchers. For example, in my first week, I was presented with a large box of maps and broadsides that had been stashed away by a former stacks manager because they were in need of some sort of treatment before being housed in the library stacks. One of the details that I recorded during my examination was media type and print process. Knowing what materials are present can help determine what treatment methods are possible. The oil- and pigment-based lithographic printing ink used on the bulk of the objects is not sensitive to water-based treatments, such as bathing. However, the poor-quality iron gall ink inscription at the bottom of one of the broadsides may include added ingredients that could wash away during aqueous treatment, so thorough testing will need to be carried out in order to ensure that the treatment does not alter the document in a negative way.

Another important factor to consider before proposing a treatment is the historical and material context of the object. This information can help to understand construction and condition aspects of the object as it exists today, as well as aid in determining specific goals of a treatment. A good example is another one of my upcoming projects, an early copy of Francis Bacon’s Sylva Sylvarum (an exhaustive natural history record published shortly after his death in 1626). I say “early copy” because the book is lacking the title page (and the front board, and most of its spine… but that is less relevant at this point) which contains the date of publication. It would be fairly easy to just look up the publication date of the book, but that is complicated by the fact that the book was republished in almost 20 editions in the 17th century alone, and without the title page it can be tricky to determine which edition I am looking at. However, in comparing the text with other copies of other editions in the special collections, and with images of other editions available online, I began to parse out the small differences that set the various books apart. During the hand press period, individual pieces of metal type were arranged by hand to print each sheet of text. Even if the same type was used and arranged the same way for different editions, small differences can be seen.See the picture below with the 1626 edition on the left and the 1631 on the right.
The red arrow points to the switched orientation of the type used in the border. Note the different catchwords in the yellow boxes.

Using this method, I was able to determine that the book was either a first edition (1626) or a reissue of the first edition (1627). (“Reissue” meaning the book was put on sale again without re-setting the type or making changes to the text – which could constitute a new “edition.”) The only difference between the 1626 version and the 1627 version is the addition of a fancy, engraved title page, in addition to the original, plain, letterpress title page (which still reads 1626). The reason for these variations, or any clues to which year the copy in the Small Special Collections was published, is still eluding me.  Further research and a possible trip up to the Folger to look at some other 1626/7 copies will hopefully shed some light on this soon. I’ll keep you posted!

All the condition and contextual information, along with a step-by-step proposal based on what I see when I look closely at each object, is recorded systematically in an assessment/treatment proposal document. This document serves both as a guide for the conservator during treatment and as a reference point for discussion with the curator, who will determine if the proposed treatment aligns with the research goals for the object.

Next, the object is photographed to record its condition and unique features before treatment. Usually, this is done on a copy stand for books and documents. However, many of the maps and broadsides I will be treating were too big, so they were done on the Digitization Production Group’s Cruse scanner. The images collected by the flatbed scanner are so high-quality that each scan takes about 10 minutes to complete!


After all this, the objects are finally ready to treat, and I hope to dive in on that step starting next week. 

Friday, August 3, 2012

More on the History of Weebles





This trade literature collection keeps turning up more information on weebles! First the Strawbridge catalog, and now a catalog for pose-able circus toys "Schoenhut's Marvelous Toys" which has an add on the back for "Rolly-Dolly" toys.  Patented in 1909!

click for bigger!
Although if you read the fine print, you'll find out that there were weebles on Noah's Ark!

click for bigger!
I guess Noah forgot to take out a patent.

Monday, July 23, 2012

Qualifications of a Siberian Haridresser

This pamphlet was on exhibit for way too long.  Even with UV filtered light in the exhibit cases, paper documents can get bleached.  By "bleaching", I mean the yellowing apparent on the blank margin of the paper.  The white-ish stripe in the first printed column is where the Mylar strap held the pamphlet open and protected the paper from the light.  Not all of the items in the exhibit show this level of damage, so I'll be reviewing the lighting and other exhibit conditions that could be affecting this particular piece. 

Exhibits can be tricky.  They're a wonderful opportunity to showcase your collections, bringing out items that the average visitor to your institution may not know about and yet you are exposing your collections to potential damage that you may not be aware of until too late.

Friday, July 6, 2012

More Tape Progress

Another week, another Randolph letter, and yet another type of tape.  Again, I started my testing protocol, but this time, I decided to take a picture of the tape residue with my cell phone, and keep the image handy while I tested.

I often track my progress by stopping the application of solvent and lifting the piece to check for residue on the chromatography paper.  The process can be a little clumsy if you have a large piece of paper (although in this case I don't), but what can be really tricky is noticing progress, especially if the adhesive residue doesn't stain the chromatography paper.  I find myself wondering "is this acetone doing anything?"

But having this "before" picture right next to the actual piece I can look back and forth and and notice very quickly even minimal change in the adhesive residue on the letter.  Very cool.

Wednesday, June 27, 2012

Tape Progress!

As a book conservator, I spend almost as much time thinking about tape as I do thinking about books and paper.  Tape (or pressure-sensitive adhesive as we call it in the biz) is one of the easiest ways to mend a tear, and is a standard supply at home or at the office. 

But tape doesn't age very well.

Take a look at this before treatment (BT) photo of a letter from John Randolph of Roanoke.  A previous owner "fixed" the holes and tears in the letter with pieces of tape.  The shiny section at the top left is tape carrier (the layer of plastic that holds or carries the adhesive) that is on this (recto) side of the letter.  The dark square in the lower right of the letter is tape that is on the other (verso) side and the discoloration is a result of the adhesive in the tape sinking sinking through the paper. 

Here's the letter from the verso side, see the shiny surface of the tape carrier in the lower left corner and the translucent section in the top right.  This is a great example of highly enmeshed and cross-linked adhesive and brittle, distorted carrier!

Removing the carrier is relatively easy, but removing the adhesive from the paper can be very tricky.  Generally conservators use solvents, first testing with water and then on to stronger solvents like ethyl acetate or acetone.  If a straight solvent doesn't work, then testing begins again with a mixture.  It can take a while to find the right solvent, or right combination but if you don't find it, the adhesive won't budge; its not as though solvent  X will get it to move a little and solvent Y will move it faster. 

In this case, straight solvents didn't work and after I tried a few mixtures that didn't work, I reached out to my colleagues in other labs.  Everyone was generous with their recipes and eventually I found a mixture that fit the bill.  This is another verso shot of the letter taken just after I completed the treatment.  Note how the discoloration is gone, as though the tape had never been there in the first place.  Pretty amazing!

Sometimes even after all the meticulous work of testing and applying tiny patches of solvent with a cotton swab, conservation feels like magic!