These records of the Croatian Fraternal Union of America include records of the statewide organization and of lodges in Roundup and Lewistown, Montana, and one junior nest in Roundup. The statewide records include minutes and proceedings (1915-1954) of state conventions, and rules and bylaws (1917-1932) of the organization. The Lewistown Lodge [King Tomislav #272 and #4] records include correspondence (1924-1955); financial records (1907-1956), including dues ledgers and journals, and a treasurer's book; minutes (1910-1928, 1950-1955); and membership books (1904-1930, undated). The Roundup Junior Order, Nest #43 records include dues journals (1951-1980) and a financial ledger (1932-1975). The records of the Roundup Lodges [Sv. Srce Isusovo #384, Napredak #384, and Stars #775] consist of financial records including an insurance book (1925-1952), a sick benefits account ledger (1925-1980), and treasurer's day books (1931-1973); minutes (1931-1959); and a membership list (undated).