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David Thompson (1770-1857) is considered by many to have been the most important surveyor of North America. His achievements -- mapping the Saskatchewan River, the great bend of the Missouri River, the Great Lakes and the headwaters of the Mississippi as well as the Columbia... Read Full Overview

With the publication of David Thompson's Columbia Journals, Barbara Belyea gives wider recognition to the fur trader, primary explorer, and cartographer who lived from 1770 to 1857. His Columbia Journals not only documents the North West Company's efforts to find good trade routes... Read Full Overview