1971 census of Canada. Economic characteristics, basic distributions = Recensement du Canada 1971. Volume 3, partie 1, Caractéristiques économiques, répartitions de base ; Bulletin 3.1-12
prepared by Department of Industry, Labor, and Human Relations, Division of Employment and Training Policy with the cooperation of Department of Administration, Demographic Services Center [and] Department of Health and Social Services, Wisconsin Resettlement Assistance Office