U.S. Institutions Have Taken Responsibility to Preserve 4.8 Billion Collections Items
Books/Bound Volumes
1.7 billion
Microfilm/Microfiche
1 billion
Natural Science Specimens
820.2 million
Photographic Collections
727.4 million
Archaeological Collections, individually cataloged
197.8 million
Unbound Sheets, cataloged in items
95.8 million
Online Files
54.6 million
Historic Objects
48.3 million
Recorded Sound
46.4 million
Unbound Sheets, cataloged in linear feet
43.6 million
Moving Images
40.2 million
Art Objects
21.2 million
Digital Materials
9 million
Archaeological Collections, cataloged in cubic feet
2.6 million
Collections Held by U.S. Institutions (by type)
Collections Held by U.S. Institutions (by size)
Institutions with a Written, Long-range Plan for the Care of the Collection
U.S. Collections in Unknown Condition and in Need
