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041416_samples
CORE SAMPLE

c. 1910
HSP Institutional Archives

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.

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The Historical Society of Pennsylvania
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