Records of the International Association of Machinists, Lodge 88 (Butte, Montana) include general correspondence (1943-1953, 1967, 1969); financial records (1937-1970), including membership information; legal documents (1937-1960), consisting of labor agreements with employers; minutes (1915-1921, 1943-1959); reports (1944, 1947); subject files (1966-1967) pertaining to The Anaconda Company; and miscellany. [Artifacts have been transferred to the Museum.]