The Montana Council of Defense was established during World War I to coordinate county war efforts. It also investigated cases of alleged disloyal activities. Records (1916-1921) include minutes, correspondence, subject files, testimony and exhibits for hearings and special investigations, membership lists, and correspondence of various county councils of defense.

Samuel T. V. McBee papers documenting his time as homesteader and postmaster in Barnard, Valley County, Montana. Documents include Homesteading Application Postmaster appointment documents, livestock brand registers, Wheat Growers Association stock certificate, Grain Commission and Cattle Club documents.

The Women's Helena for the Capital Club was a Helena, Montana, based organization promoting the establishment of Helena as the state capital of Montana. Records (1894) include incoming correspondence; county lists; a record book containing correspondence, financial reports, speeches, resolutions, clippings, and broadsides; and miscellany.