The records of the League of Women Voters of Montana include general correspondence (1953-1989) arranged by president; financial records (1955-1981); minutes (1953-1989) of Board, Council, and Convention meetings; organizational materials (1921-1989) including standards for organizations, Convention programs, lists of officers, etc.; reports (1956-1987) to National League and of the Board; speeches (1981); subject files (1954-1988) including agenda items and other topics arranged alphabetically; miscellany (1956-1976); and clippings (1952-1986).

Records of the local Leagues are arranged in additional subgroups, arranged alphabetically (Billings, Bozeman, Butte, Flathead County, Great Falls, Havre, Helena, Liberty County, Missoula, Ravalli County, and South Lincoln County). Materials in the local League subgroups include general correspondence, financial records, minutes, organizational materials, reports, miscellany (including agenda items, studies, etc.), and clippings.

The addendum, 1963-2004 include miscellany correspondence of league member Harriett Meloy (1966, 1980, 1987-88, 1990, 1993-1994, 2000-2001); minutes of the Helena League (1999); miscellany (1963, 1975, 1991-1996, 2000-2002); organization materials of the Helena League (1997, 1980-1981, 1993, 1996) and Ravalli County League (2000); printed materials (1966, 1968, 1973, 1988, 1994-1995, 2002-2004); subject files (1963-2001) including legislative items and other topics arranged alphabetically; writings (1971-1974) that include environmental quality statements; clippings (1996, 1998); and newsletters (1976-2004). The majority of the records are arranged alphabetically by subject files, titles, and subgroups. Many of the subject files are relate to environmental quality, air quality, and legislative actions.