- J. D. Eggleston Papers, 1750/19525
- J. Davitt McAteer Papers regarding Mining Safety, 1860/2013, bulk 1970/201015
- J. Edgar Boyers Commissions as Colonel and Brigadier General, 1859/19121
- J. H. Kelley, Physicians' Accounts, 1886/19061
- J. Hoge Tyler Diary, 1846/2009, bulk 1846/19252
- J. Hoge Tyler Family Collection, 1802/195686
- J. Howard Miller papers, 1891/19462
- J. J. Fahrney Papers, 1886/19362
- J. Keller Reid Papers, 1864/19401
- J. M. Shugar and A. W. Vaisey papers, 1832/191411
- J. M. Tise Ledger and Tise Family Receipts, 1798/19371
- J. Montgomery Curtis, Journalist, Papers, 1891/19923
- J. P. Houck ledgers, 1892/18952
- J. Palin Thorley Papers, 1910/1987, bulk 1930/19861
- J. Paul Hudson Papers, 1930/19981