This fonds contains materials relating to Sophia Dixon's interests in international relations; the various ideologies current in the 1930s and 1940s, notably labour and worker's rights, socialism, communism, social credit, and the rise of fascism during this period; local and international women's organizations, etc. In particular, this fonds provides a comprehensive record of the early Co-operative Commonwealth Federation (CCF) in Saskatchewan and Canada; the Farmer-Labor Group, Saskatchewan Farmer's Union, and United Farmers of Canada. Also included is a series of books and other reference materials collected by Charles and Sophia Dixon.

This fonds contains materials related both to Michael Millar’s career as a member of Humphrey and the Dumptrucks, and more personal materials relating to his life and his activity as a long-time member of Saskatchewan’s musical community.