Formats
- Slides (photographs)22
- Picture postcards.21
- Telegrams.21
- Aerial photographs.19
- Military records.19
- Cartoons.18
- Stereographs.18
- Accounts.16
- Audiotapes.16
- Books.16
- Essays.16
- Negatives.16
- Videocassettes.16
- Drawings (visual works)15
- College publications.14
- Orders (military records)14
- Paintings.14
- Web sites.14
- Cabinet photographs.13
- Certificates.13