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Roberts, David. “George Allsopp: Quebec Merchant 1733-1805.” Master’s Thesis, Queen’s University, 1974.
Gleason, Thomas Henri. The Quebec Directory, for 1822, Containing an Alphabetical List of the Merchants, Traders and Housekeepers, Etc., Within the City, To Which Is Prefixed a Descriptive Sketch of the Town... Quebec: Printed by Neilson and Cowan, 1822. http://ebooks.library.ualberta.ca/local/cihm_38606.
Fabre-Surveyer, Edouard. “Nos premiers inventeurs.” Revue trimestrielle canadienne Vol. 25 (September 1939): 231–250.