Get Those Books Moving : Part 2

cover a book with writing above and below a colored drawing of a boat on the sea with fish

Das Zauberboot (Berlin: Herbert Stuffer Verlag, 1935) front cover, before treatment. *Please note that this book contains some insensitive, stereotypical cultural depictions of people.

Guest post by Shaoyi Qian, summer 2021 Cathleen A. Baker Fellow in the U-M Library conservation lab and current Andrew W. Mellon Fellow in Library & Archive Conservation, Institute of Fine Arts, New York University. These posts feature Shaoyi's treatments for books from The William A. Gosling Pop-up and Movable Book Collection, part of the Children's Literature Collection in the Special Collections Research Center.

In this second post of the series, I will describe the treatment of another movable book, which contains a variety of movable and interactive elements such as pull-tabs, a rotating wheel, and disappearing images.

opening of a book with colorful drawings featuring a scene of a mountain bridge over a river on the left and small drawings of homes on the right
Rotating wheel (left);  A decoding card that only shows a certain group of things (houses, flowers, etc.) at a time (right).
view of an open book lying flat with many drawings, some covered in pieces of translucent red film
The red films render the red ink in the image invisible, creating an image transformation that follows the story line (eg: a child in bed starts floating).
screen capture of the opening a video with title over pair of hands clasping a book
 Das Zauberboot in action before treatment
(click here to view the video)

For the pull-tabs and the rotating wheels, the mechanisms are sandwiched between two pages. The pull-tab mechanism in this book also consists of a pull-strip and a slat with a printed image that shows behind the cut-out windows in the top sheet. Instead of being laced through slits (as was seen in The Animated Alphabet), the strip is laced through one or two loops attached to the base sheet. Before treatment, the pull-tab mechanisms failed because the loops were missing or detached.

The top loop was cut open to release the pull-strip in order to remove the old repairs and reinforce the strip. 

view between pieces in the construction of the book with finger tips holding the pieces slightly apart
The internal structure of the moveable piece "Das Neue Wunderhaus." The bottom loop was loose.
view of an open book with colored drawing of a house with free pull tab beside it
After the pull-strip was taken out more old repairs were found (above and below)

view of a page of the book with previously repaired pull tab

Like the pull-tabs on The Animated Alphabet, these pull-tabs were worn and damaged from use and had been previously repaired with tapes. The repairs were crudely executed and the tape adhesive was staining the paper.  I removed the adhesive embedded in the paper using a suction platen and organic solvents.  This reduced some of the stains and prevented  further staining.

view of gloved hand holding brush against page being treated with bottles and vessels in the background
Removing adhesive residue with organic solvents on a suction platen in the fume hood.

The opening at the bottom edge was very restricted. I used a long surgical tool with a small grabbing end called a valve scissor to feed the pull-strip back in place, re-join the detached loop, and adhere a new loop onto the base sheet.

view of a valve scissor and of conservator holding scissor while inserting between pages of book resting on dark table
Inserting the pull-strip using a valve scissor (inset)

In the last movable element, Crosses Theater, one of the pull-strips had fallen out because a loop was missing (see image below). Fortunately, this time, I could work through the cut-out window and not separate the sheet as I had previously.

view of open book with colored drawings and pull tabs visible
Top pull-strip taken out (left)

I made a new loop with a medium thick, smooth paper. The smoothness minimizes friction while the proper thickness ensures that the other pull-strip (that operates a red curtain) could glide over them smoothly. 

Now, both the first and last movable elements in this book function smoothly.

screen capture of video showing book being held by hands
Das Zauberboot in action after treatment
(click here to view video)

I have so far covered the conservation of two movable books. Next blog, the last of this series, will describe the treatment of a 20th-century pop-up book, so “pop” in if you are interested!