Collection
- Sumner H. Cater collection, 19132
- T. B. Curtis docket book, 1861-18872
- The Conundrum Crop for 1859 manuscript, 18592
- The Mental Portrait Album, 1894-1972 (majority within 1894-1895)2
- Theodore Roosevelt collection, 1885-19332
- Thomas Gage papers, 1738-1807 (majority within 1745-1775)3,227
- Thomas Gage warrants, 1763-177544
- Thomas M. Bridges Crow Creek and Fort Hall Reservations Collection, ca. 1850-1918 (majority within 1892-1899)4
- Thomas O'Brien photograph album, ca. 1944-19452
- Towle family correspondence, 1850-189527
- Traveling photographers collection, ca. 1850s-1900s4
- Two Little Stockings manuscript poem, 19012
- U.S. Army 15th Infantry Regiment Photograph Albums, ca. 1919-19272
- USS New Jersey journal and postcard album collection, 1907-19092
- Union Sabbath School (Ashland, Ohio) record book, 1874-18842
- United States War with Mexico collection, 1845-189435
- United States. Army. 3rd Cavalry Regiment receipts, 1876-18782
- Views of Santiago photograph album, ca. 18992
- Vine Utley manuscript, "Observations on Old People 80 Years of Age", 1809-1818, 18272
- Visiting Card specimen book, [circa 1890s]2