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Monday, February 8, 2010

What's In Conservation? A Map the Size of London (almost)

What's 6-3/4 feet high by 13 feet long? This London map printed in 1747 by John Rocque of course! Originally issued in 24 panels, this map is a very detailed map of the city complete with pubs, churches and other points of interest. It came to our attention through a cataloger in RBMSCL who needs it opened and flattened so he can describe it.

This arrived in six rolls, each roll having four, 40 by 70 centimeter panels attached to a linen backing (pictured above). The first step was to meet with the curator to discuss treatment options. Everyone decided that separating each panel would make it easier to catalog and store, and ultimately much more usable as an object. As these were originally printed in panels we all felt that separating them was acceptable.

After getting the go-ahead we carefully cut the panels at the "seams" leaving each panel adhered to its linen support. Next we dry-cleaned the front and back of each panel to remove surface dirt. Each roll will go into a humidification chamber (pictured left) to relax the paper and fabric so it can be unrolled and flattened between felts and a heavy weight. Once flat, we will repair the damaged areas and create a housing for them as a group. Then back they go to cataloging and ultimately the shelf so that you, too, can request to look at them.

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