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McKelvie, B.A.. Fort Langley: Outpost of Empire. Toronto: Thomas Nelson and Sons Limited, 1957.
McKelvie, B.A.. “Jason Allard: Fur-Trader, Prince, and Gentleman,” British Columbia Historical Quarterly IX, no. 4 (1945): 243-257.
McDougall, Allan, Lisa Phillips, and Daniel L. Boxberger. Before and After the State: Politics, Poetics, and People(s) in the Pacific Northwest. Vancouver: UBC Press, 2018.
MSS 155: Jason Ovid Allard Scrapbook at Langley Centennial Museums and Archives.
Roy, Patricia E., and John Herd Thompson. British Columbia: Land of Promises. Canada: Oxford University Press, 2005.
Sage, Walter N.. “Life at a Fur Trading Post in British Columbia a Century Ago,” in The Washington Historical Quarterly 25, no. 1 (1934): 11-22.