Mackie, Richard Somerset (1997). Trading Beyond the Mountains: The British Fur Trade on the Pacific 1793–1843. Vancouver: University of British Columbia (UBC) Press. p. 250. ISBN978-0-7748-0613-8. online at Google Books
Sage, Walter N. (1932). "The Critical Period of British Columbia History, 1866–1871". Pacific Historical Review. 1 (4): 424–443. doi:10.2307/3633112. JSTOR3633112.
Trotter, Reginald (1935). "Canada as a Factor in Anglo-American Relations in the 1860s". Canadian Historical Review. 16: 354. doi:10.3138/chr-16-01-02. S2CID161095202.
It was named after the Columbia Department of the Hudson's Bay Company, which in turn was named after the Columbia River. Ged Martin, "The Naming of British Columbia," Albion: A Quarterly Journal Concerned with British Studies, Vol. 10, No. 3 (Autumn, 1978), pp. 257–263 in JSTOR
Sage, Walter N. (1932). "The Critical Period of British Columbia History, 1866–1871". Pacific Historical Review. 1 (4): 424–443. doi:10.2307/3633112. JSTOR3633112.
David E. Shi, "Seward's Attempt to Annex British Columbia, 1865–1869," Pacific Historical Review, May 1978, Vol. 47 Issue 2, pp 217–238 in JSTOR
Neunherz, R. E. (1989). ""Hemmed In": Reactions in British Columbia to the Purchase of Russian America". The Pacific Northwest Quarterly. 80 (3): 101–111. JSTOR40491056.
Trotter, Reginald (1935). "Canada as a Factor in Anglo-American Relations in the 1860s". Canadian Historical Review. 16: 354. doi:10.3138/chr-16-01-02. S2CID161095202.