Parson, Helen E. “The Rise and Fall of Farming in a Marginal Area: The Gatineau Valley, Quebec.” Cahiers de géographie du Québec Vol. 19, no. 48 (Décembre 1975): 573–582. https://www.erudit.org/en/journals/cgq/1975-v19-n48-cgq2622/021298ar.pdf.