Collection
- R. H. Logan Papers1
- Racial and Ethnic Ephemera Collection1
- Randolph Lytton historic Washington, D.C. postcards and photographs collection1
- Reed Family Papers1
- Reed Family Papers 1899-19461
- Rev. Samuel Huntting Sayre, Jr. Papers1
- Roane Family Papers1
- Robert Edward Minshall Papers1
- Robert Truax Washington, D.C. transportation collection1
- Russell Family Correspondence1
- Ryland Correspondence Collection1