Thompson, David

THOMPSON, David, fur trader, mapmaker (b 30 Apr 1770, London, England; d 10 Feb 1857, Longueuil, QC). He joined the HBC as an apprentice in 1784 and came out to York Factory on Hudson Bay. While serving inland he studied surveying and mapmaking, and he defected from the HBC to join the NORTH WEST CO in 1797 because his new employer gave him freer rein to indulge his interest in exploring. By 1806 he had completed his surveys of the fur country east of the ROCKY MTS, and with the help of...

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