- Abraham Anson papers, 1939/20053
- Alexander Haight family collection, 1764/19761
- American Political Items Collectors collection3
- American Public Transportation Association records, 1898/19996
- Arnold Sundgaard papers, 1925/19886
- Arthur E. Scott photograph collection5
- Arthur Peterson papers1
- Broadway souvenir theatre programs collection, 1942/19971
- C-SPAN records, 1809/2012, bulk 1978/20121
- C. Harrison Mann, Jr. papers, 1832/19792
- Carol D. Litchfield microbiology collection1
- Carol R. Lubin papers, 1960/19811
- Charles Baptie photograph collection6
- Charles Rodrigues playbill collection, 1879/20094
- Chester H. McCall papers, 1931/19471