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An alternative to spraying the maps is to raise the moisture level
in the paper, is to place the folded maps in an air-tight container,
such as a picnic cooler, with a container holding a wet sponge.  Left
in the cooler for four or five days, the paper will absorb the moisture
from the wet sponge without running the risk of water spots.  The
maps will unfold very nicely after the four or five days.  Place acid
free paper between map sheets, and put weight on the stack for a few
days.  They should be quite flat after that.  If you place your maps
in acid free folders inside the map case drawers, the folder will help
to keep them flat.
                     Donna Koepp
                     University of Kansas
                     Government Documents and Map Library
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