- Alexander Haight family collection, 1764/197610
- American Political Items Collectors collection3
- American Public Transportation Association records, 1898/19998
- American voyage photograph albums, 1904/19392
- Arthur E. Scott photograph collection3
- C-SPAN records, 1809/2012, bulk 1978/20122
- C. Harrison Mann, Jr. map collection, 1579/19611
- C. Harrison Mann, Jr. papers, 1832/19792
- Carol R. Lubin papers, 1960/19811
- Charles Lietwiler transportation collection, 1903/20051
- Charles Rodrigues playbill collection, 1879/200911
- Clarence J. Robinson papers, 1897/19781
- Clark E. Warburton papers, 1920/197912
- Cookbooks and cooking pamphlets collection, 1910/20081
- Edward Vitale violin music collection, 1886/195113