Collection
- "The Different Styles of Architecture as Illustrated by the Public Buidings [sic] of Washington, D.C." by Margaret Brooks booklet1
- Alexander Haight family collection23
- American Political Items Collectors collection4
- American Public Transportation Association records3
- American voyage photograph albums2
- Beaven brass rubbings collection1
- C-SPAN records4
- C. Harrison Mann, Jr. Map Collection1
- C. Harrison Mann, Jr. map collection1
- C. Harrison Mann, Jr. papers2
- Carol R. Lubin papers2
- Charles Lietwiler transportation collection1
- Charles Rodrigues playbill collection14
- Clarence J. Robinson papers2
- Clark E. Warburton papers11