The Banta mss., 1836-1888, consists of the papers of James P. Banta, 1814-1873, Civil War soldier of Salem, Indiana, and his wife, Jane P. Lewelling, 1812-.
The Bartholomew mss., 1838-1886, consists of the papers of American businessman, pioneer, and judicial officer Jacob Bartholomew, 1818-1863, and his wife, Emily Ebersole Bartholomew, 1825-1913.
The Cleghorn mss., 1826-1893, consists of correspondence and papers of Indian trader William W. Cleghorn, 1815-1878, and material pertaining to his estate.
The Drake mss., 1848-1849, consists of the letters of physician Daniel Drake, 1785-1852, to his children, copied by U.S. senator Charles Daniel Drake, 1811-1892.
The Gregg mss., 1844-1848, consists of letters of Josiah Gregg, 1806-1850, Santa Fe trader and author, to John Bigelow, 1817-1911, editor, diplomat, and author.
The Harding mss., 1843-1930, consists of the papers of Stephen Selwyn Harding, 1808-1891, lawyer, governor of Utah Territory, and chief justice of Colorado Territory.