Books bound with metal fasteners dried satisfactorily. The air-dried volume showed the most pronounced distortion. Because hard covers were lacking on these volumes, they could not be dried vertically, and pages were forced to flex across a fastener in the flat open format used for drying.
All pamphlet-style volumes dried acceptably. Dehumidification-dried samples show the greatest distortion. We cannot say whether the patented vacuum freeze-dry sample was damaged by the process’s compression plates, or its placement within a box.