The Blair, M.A.I. mss., 1684-1897, consists of letters and documents collected by art collector and benefactor Mary Anne Italia Mitchell Blair, 1855-1940.
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 King mss., 1815-1863, consists of the correspondence of Rufus King, 1755-1827, member of the Continental Congress and of the Constitutional Convention, U. S. senator and minister to Great Britain, and of members of his family.
The Lafayette mss. II, 1774-1957, are individual letters and documents relating to the Marquis de Lafayette, Marie Joseph Paul Yves Roch Gilbert du Motier, 1757-1834, general, which have been acquired from several sources.
The Signers of the Declaration of Independence mss., 1848, consists of materials pertaining to the members of the Continental Congress who drafted and signed the Declaration of Independence.
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.
The Williams, Jonathan mss., 1738-1869, consist of letters and papers of Jonathan Williams, 1750-1815, merchant and soldier, grand-nephew of Benjamin Franklin and first superintendent of the U.S. Military Academy at West Point.