John Huxtable Elliott, Empires of the Atlantic World, Yale University Press, 2007, pp.11-12, ISBN978-0-300-12399-9. online at Google Books
David J. Weber, The Spanish Frontier in North America, Yale University Press, 1994, p.287, ISBN978-0-300-05917-5. online at Google Books
Michael G. Chiorazzi, Marguerite Most, Prestatehood Legal Materials, Haworth Press, 2005, p.959, ISBN978-0-7890-2056-7. online at Google Books
Michael G. Chiorazzi, Marguerite Most, Prestatehood Legal Materials, Haworth Press, 2005, pp.959–962, ISBN978-0-7890-2056-7. online at Google Books
Richard Somerset Mackie, Trading Beyond the Mountains: The British Fur Trade on the Pacific 1793-1843, Vancouver, University of British Columbia (UBC) Press, 1997, pp.65, 108, 110–111, ISBN0-7748-0613-3. online at Google Books
Richard Somerset Mackie, Trading Beyond the Mountains: The British Fur Trade on the Pacific 1793-1843, Vancouver, University of British Columbia (UBC) Press, 1997, pp.64–65, 259, ISBN0-7748-0613-3. online at Google Books
Richard Somerset Mackie, Trading Beyond the Mountains: The British Fur Trade on the Pacific 1793-1843, Vancouver, University of British Columbia (UBC) Press, 1997, pp.240–245, 256–262, 264–273, 276, ISBN0-7748-0613-3. online at Google Books