Records consist of Lambda Chapter records, including several local branches, plus Lambda Pi Chapter records (the alumnae chapter), and a few national items.

Statewide records include biographical sketches on early members; interoffice correspondence (1955-1980); general correspondence (1956-1979); financial records (1948-1977); minutes (1956-1978); organizational records (1940-1977) including the charter, constitution and bylaws, member and officer lists, policies and procedures, and rituals; press releases (1973); a newsletter (1961-1978) entitled Lambda Hotlines; reports (1956-1973) to the national organization; subject files (1961-1977); miscellany; and clippings (1955-1973).

There are small subgroups for the Billings Deaconess Division, the Bozeman Division, the Butte Division, the Great Falls Deaconess Division, the Lambda Pi Chapter [alumni], and the national organization.