- newspapers348,686
- clippings (information artifacts)10,407
- obituaries10,210
- photographs5,004
- marriage licenses4,554
- civil court records4,012
- black-and-white negatives3,257
- judicial records3,150
- black-and-white photographs2,775
- maps2,713
- safety film negatives1,916
- cadastral maps1,908
- biographies (literary works)1,763
- maps (documents)1,757
- questionnaires1,752
- plats (maps)1,641
- letters (correspondence)1,593
- aerial photographs1,554
- diaries1,531
- presidential papers1,389
