Records of the cases in the Circuit Court of Eau Claire County. Included are the Card Index to Citizenship (1857-1991), Declarations of Intentions (1856-1980), Petitions (1906-1991), Certificates of Naturalization (1857-1906), Certificates of Naturalization Stub Books (1907-1928), a list of Citizenship petitions granted and denied (1929-1991), Applications for Transfers of Petitions (1968-1972), and Repatriation (Oath of Allegiance) (1949-1944).

Documents filed in Eau Claire County Court concerning the probate of estates; filing of wills; guardianships of minors, insane, or incompetents; insanity and commitment cases; and adoptions. Includes petitions, orders, letters of administration, wills, and inventories of estates.