Thompson was responsible for expanding trade networks for the North West Company and he surveyed and mapped a large portion of what is now western Canada, including the Rocky Mountains and the Columbia River. He also completed a 67500 km survey from Grand Portage to the heads of the Assiniboine and Mississippi Rivers.
Map of the North-West Territory of the Province of Canada, 1814 by David Thompson. |
More recently, an archaeologist believes he discovered one of Thompson's first trading posts at Sipiwesk Lake near the Nelson River. The discovery includes the remnants of chimneys from the post and storehouse and was found using Thompson's coordinates in his journals. He apparently spent at year at Sipiwesk in 1792.
If you are interested in learning more about Thompson, check out this online exhibit created by the Archives of Ontario. The Trade, a novel by Fred Stenson, is set in the early 19th century and follows a series of historical people as they work for the HBC. It's a looong book but it's definitely worth reading if you want to learn more about the life of a fur trader.