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Roy, Louis, and Michel Verdon. “East-Farnham’s Agriculture in 1871: Ethnicity, Circumstances and Economic Rationale in Quebec’s Eastern Townships.” Canadian Historical Review Vol. 84, no. 3 (2003): 355–393.

Roy, Louis, Gérald Domon, and Sylvain Paquette. “Settlement Pattern, Environmental Factors and Ethnic Background on a Southwestern Quebec Frontier (1795-1842).” The Canadian Geographer/Le géographe canadien Vol. 46, no. 2 (Summer 2002): 144–159. http://landscape.forest.wisc.edu/courses/readings/RoyEtAl_CanGeog2010.pdf.