- J. Ambler Johnston Papers, 1901/19742
- J. D. Eggleston Papers, 1750/19525
- J. Davitt McAteer Papers regarding Mining Safety, 1860/2013, bulk 1970/201038
- J. Edgar Boyers Commissions as Colonel and Brigadier General, 1859/19121
- J. Hoge Tyler Diary, 1846/2009, bulk 1846/19252
- J. Hoge Tyler Family Collection, 1802/195697
- J. Howard Miller papers, 1891/19462
- J. J. Fahrney Papers, 1886/19366
- J. Keller Reid Papers, 1864/19401
- J. Luther Kibler Papers, 1908/19442
- J. M. Shugar and A. W. Vaisey papers, 1832/19142
- J. M. Tise Ledger and Tise Family Receipts, 1798/19371
- J. Montgomery Curtis, Journalist, Papers, 1891/19923
- J. Ogden Murray Scrapbook, 1901/19491
- J. Palin Thorley Papers, 1910/1987, bulk 1930/19865