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historicplaces.ca
Sebert, L.M. (1971). The Determination of Longitude in Western Canada. Technical Report No: 71-3. Ottawa: Surveys and Mapping Branch, Department of Energy, Mines and Resources. Sebert gives 102°16′ as the longitude of Cumberland House, but Old Cumberland House, still in use at that time, was 2km to the east, see: "Cumberland House Provincial Park". Canada's Historic Places. Parks Canada. Retrieved 21 August 2020.
Hines, Clarence (1939). "The Erection of Fort Nez Perce". Oregon Historical Quarterly. 40 (4): 327–335. JSTOR20611211.
White, M. Catherine (1942). "Saleesh House: the first trading post among the Flathead". The Pacific Northwest Quarterly. 33 (370–380): 251–263. JSTOR41441196.
Broughton, Peter (2009). "The Accuracy and Use of Sextants and Watches in Rupert's Land in the 1790s". Annals of Science. 66 (2): 209–229. doi:10.1080/00033790902743001. S2CID144444555.
Pollitt, Frances L. (2007). "Mapping the International Boundary Between the United States and Canada 1797–1843". Journal of Map & Geography Libraries. 3 (2): 97–110. doi:10.1300/J230v03n02_06. S2CID129281712.
ualberta.ca
sunsite.ualberta.ca
"Lac La Biche". Atlas of Alberta Lakes. Edmonton, Alberta: University of Alberta. 2004. Archived from the original on 10 June 2015. Retrieved 27 March 2018.
"Lac La Biche". Atlas of Alberta Lakes. Edmonton, Alberta: University of Alberta. 2004. Archived from the original on 10 June 2015. Retrieved 27 March 2018.