Janvier's map of North America is one of the signature mid-18th Century maps for North American and Northwestern map collectors. The map is known in a number of transitional states, of which this state is perhaps the most interesting. The Tchirickow/De L'Isle coastline reminiscent of the Alaskan Archipelago remains shown above the words Mer Du Sud, but the connection to the mainland has been replaced with open sea. The Bay of the West appears in its usual configuration, which is present in at least 3 states of this map, as are the configurations of the Straits of Juan De Fuca and Martin Aguilar. The Archipel St Lazare appears in a region which was previously land locked. The mythical river system crossing Canada is still in evidence. Lac Michinipi ou des Assinibouels is shown. The sources of the Missouri and Mississippi Rivers are shown, albeit speculatively so. A few early French forts still appear in the Transappalachian West. A nice example of this signature Sea or Bay of the West map.
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1762 Jean Janvier