- biographies (literary works)2,218
- cadastral maps1,908
- ledgers (account books)1,809
- diaries1,771
- questionnaires1,766
- reports1,758
- aerial photographs1,738
- catalogs (documents)1,700
- archival materials1,575
- field notes1,568
- color negatives1,549
- interviews1,513
- broadsides (notices)1,440
- nitrate negatives1,421
- printed ephemera1,395
- presidential papers1,389
- government records1,372
- serials (publications)1,357
- press releases1,356
- color slides1,351
