The Indiana History mss., 1725-1973, consists of individual items related to the history of the state of Indiana, acquired separately either as a gift, purchase, transfer, or removal from a variety of sources.
The Hunter mss., 1862-1893, consists of the Civil War documents of Morton Craig Hunter, 1825-1896, brevet brigadier general and congressman from Indiana.
The Hovey mss., 1841-1927, consist of letters and papers of Alvin Peterson Hovey, 1821-1891, governor of Indiana, and correspondence of his daughter, Mrs. Esther (Hovey) Menzies, and Mrs. Deidre Dorothy (Duff) Johnson.
The Hill mss., 1851-1914, consist mainly of letters and papers of James Nathaniel Hill, 1833-1902, farmer of Owen County, Indiana, and Civil War soldier.
The Colfax mss., 1853-1884, consists of the papers of South Bend, Indiana, newspaperman, speaker of the House of Representatives, and vice-president of the United States Schuyler Colfax, 1823-1885.
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 Clark, W.A. mss., 1862-1918, consists primarily of letters from Hoosier soldier William Allen Clark, 1844- , to his parents in Rossville, Indiana, during his service in Company K of the 72nd Indiana Volunteer Infantry Regiment.