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| CORE SAMPLE c. 1910 Six-inch thick concrete floors added to the fire resistant qualities of the building. DOCUMENT BOX Manufacturer Unknown, c. 1920s Though originally an appropriate choice for storing pamphlets, this box is made of highly acidic paper and wood, both of which deteriorate over time and can damage the contents of the box. The Society is working to replace these boxes as rapidly as possible. DOCUMENT BOX Gaylord, 1990s Through the current use of non-reactive cardboard boxes and acid-free file folders, paper collections are protected to a considerable degree from further acidic deterioration. © Copyright 2000 |
