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.
The Bement mss., 1843-1891, consists of the correspondence of Isaac Bush, 1815-1864, farmer of LaPorte County, Indiana, and his wife, Sarah Ann (Bement) Bush, 1821-1891.
The Blair mss., 1843-1881, consists of letters and papers of Montgomery Blair, 1813-1883, lawyer and postmaster general in the cabinet of President Abraham Lincoln, 1809-1865.
The Tuttle mss., 1838-1912, are papers of Elizabeth A. Tuttle, 1823?-1896, nurse and teacher of Colebrook, Ohio, and of Ira Norris Noland, 1844?- , physician, who married Hattie Tuttle, niece of Elizabeth A. Tuttle.
The Thompson mss., 1837-1899, are letters and papers of Richard Wigginton Thompson, 1809-1900, lawyer, judge, Indiana state legislator, U.S. congressman, U.S. secretary of navy.
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 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 Williams, K.P. mss., 1820-1958, consists of letters and papers of Kenneth Powers Williams, 1887-1958, professor of mathematics at Indiana University and author of Lincoln Finds a General.
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.
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 Holland mss., 1781-1953, consists of correspondence and papers of three generations of Holland family physicians from Bloomington, Indiana: Philip Calphy Holland, 1840-1929, his son, George Frank Holland, 1871-1936, and his son, Philip Todd Holland, 1905-1973.
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 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 U.S. History mss., 1612-1977, consist of individual items acquired separately either as a gift, purchase, transfer, or removal from a variety of sources, relating to the United States. Additions continue to be made.