- Alan Clarke Railroad Research Papers, 1861/20121
- Baltimore and Ohio Railroad Records, 1853/18641
- Charles Brinkman, Collector, Papers, 1852/19521
- Festus P. Summers (1895-1971), Historian, Papers, 1843/19711
- George K. Campbell, Civil War Journal, 1863/18641
- H.E. Matheny, Collector and Compiler, Civil War Correspondence and Other Material, 1861/18651
- Harrison Hagans (1796-1867) Papers, 1810/18951
- Harvey W. Harmer (1865-1961) Papers, 1842/19611
- Henri Jean Mugler Diary and Memoir, 1838/18991
- Henry Solomon White Papers, 1861/18651
- Jacob M. Campbell Papers, 1861/1888, bulk 1861/18651
- John Bassel (1840-1914) Papers, 1761/19481
- John Bassel (1840-1914) Papers, 1854/19161
- John Jacob Cornwell (1867-1953), Governor, Papers and Records, 1843/19531
- John Thomas McGraw (1856-1920) Papers, 1842/19481