Joseph Kinsey Howard (1906-1951) was a Great Falls, Montana, author, newspaperman, and historian. The collection (1927-1954) consists of correspondence about the publication of his books, various subject files on professional activities such as the Montana Study, and research files for his articles and books, especially for Strange Empire about the Metis.

Martha Plassmann (1850-1936) was a Montana pioneer, historian, and journalist. Collection consists of her autobiography and over 500 historical articles written for the Great Falls Tribune and the Montana News Association during the 1920s and 1930s. The articles, based on her own memories and on research, cover a wide range of topics, especially fur trappers, explorers, and vigilantes.