1971 census of Canada. Economic characteristics, labour force, occupations = Recensement du Canada 1971. Volume 3, partie 3, Caractéristiques économiques, population active, professions ; Bulletin 3.3-4
A statistical and descriptive handbook of the Dominion. Prepared under the authority of the Government of the Dominion and the various provincial administrations. Edited and published by E.B. Biggar