v_charneau
Registered: December 2004
Posts: 4,164
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The vault renovations included provision for specialized storage of cartographic records, photographs, documentary art and library holdings.
HBCA has twenty-two maps on vellum, an un-tanned animal skin that is highly reactive to changes in humidity which can cause deformations and cracking and flaking of media. Protective enclosures mitigate the risk of deterioration.
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