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 Lane, H.S. mss., 1828-1909, consist of letters and papers of Henry Smith Lane, 1811-1881, governor of Indiana, member of the U.S. House of Representatives, and U.S. senator.
The Lincoln mss., ca. 1798-1959, consist of letters, documents, and facsimile copies of documents by and about Abraham Lincoln, 1809-1865, his ancestors, immediate family, members of his cabinet, and other persons closely connected with him.
The McCulloch mss., 1766-1914, consist of letters and papers of Hugh McCulloch, 1808-1895, U.S. Comptroller of the Currency, Secretary of the Treasury, and a partner in the London banking house of Jay Cooke, McCulloch & Company.
The Scott mss., 1817-1937, consists of the papers of Emmet Hoyt Scott, 1842-1924, businessman and mayor of LaPorte, Indiana, his father, Wiley Huntington Scott, 1796-1872, farmer and hotelkeeper of Nineveh, New York, and his son, Emmet Scott, 1873-1937.