Collection
- The Alexandria Animal Welfare League Collection (MS075), 1946/196726
- The Virginia American Water Company Collection (MS103), 1866/1988124
- Thomas Swann Correspondence (MS410), 1848/18572
- Thomas Worsley Collection (MS020), 1978/1994205
- Thomson Mason Papers (MS135), 1804/191287
- Timothy J. O'Sullivan Papers (MS087), 1867/189317
- Tulloch Papers (MS250), 1889/19921