MAP shewing the communication of the Lakes and the Rivers between Lake Superior and Slave Lake in North America
Relief shown by hachures. The map shows a river connection between Slave Lake and the Pacific through Cook's River. This was a theory expounded by Pond. With first two pages of text, pp 197, 198, from Gentleman's Magazine, titled: "Description of the Country from Lake Superior to Cook's River. Extract of a Letter from someone of Quebec, to a Friend in London. This intriguing map is based on the map and report by Peter Pond in 1787. The map traces the route from Lake Superior to Lake Winnipeg and then through an interconnected chain of lakes and rivers to Arabaska Lake and Slave Lake. The most interesting feature is the speculative river flowing out of Slave Lake, over "falls said to be the largest in the known world," and emptying into Cook Inlet in Alaska, a remarkable journey considering the topography. Pond's map influenced Alexander Mackenzie's quest to find the Northwest Passage in his famous expedition in the region.
A map displaying major Canadian waterways from the area around Nipigon, Ontario, to Cook Inlet, Alaska. Of note are the many differing names for lakes and rivers throughout the map. The falls west of Slave Lake (presently Great Slave Lake) are likely Virginia Falls, NWT. The inaccuracy of the mapping of the western and northern areas of the map make accurate georeferencing impossible without higher order transformations/local rubber sheeting. Longitude is taken from the London Meridian
1 map ; 19 x 23 cm
-165.120; 62.934; 41.44; 70
Unstated; most likely equidistant conic.
W. K. Morrison Special Collection
v.59, March 1790, opposite pg. 197
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