John Diefenbaker entered the University of Saskatchewan College of Law in 1916, and was called to the Saskatchewan Bar in June, 1919. Upon graduating he opened a private practice in Wakaw, Saskatchewan and carried on a busy practice until 1924 when he moved to Prince Albert. The Wakaw office was managed by a succession of partners until its closure in 1929. Diefenbaker worked privately and in partnership until the early 1940s when he established a partnership with John Cuelenaere. They were joined by Roy Hall in 1947 and by Clyne Harradence in 1955. After his election to the House of Commons in 1940, legal material was forwarded to Ottawa. This arrangement continued until 1956 when he was elected leader of the Progressive Conservative Party, and he thus gave up his legal practice. Diefenbaker became a King’s Counsel in 1929, and was also a member of the Bars of Alberta, British Columbia and Upper Canada.

This series contains those papers accumulated by John Diefenbaker in the course of his legal practice, although records are incomplete.