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Map of the North America 84° West to the Pacific Ocean by David Thompson
Dimensions: 87 x 152 cm (34 x 60 in)
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The Oregon boundary dispute, or the Oregon question, arose as a result of competing British and American claims to the Pacific Northwest of North America in the first half of the 19th century. Prior to the Treaty of 1846, the territory was primarily explored and mapped by North West Company Surveyor David Thompson between the years 1807 and 1812. After his retirement from the fur trade, David Thompson went on to work for the International Boundary Commission as Canada's Survey representative.During this period Thompson would provide the British Foreign Office with a series of maps of the territory. This map is one of three surviving maps
and covers a land area between 43° to 60° latitude and 84° to 126° longitude. It commonly referred to as the '84 Degrees West' map and is in fact the most detailed version
of the great 1814 map of western North America created by Thompson for the North West Company. Another
less detailed version of this map lies within the Ontario Archives which is titled 'Map of the North West Territory
of the Province of Canada'.
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