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The Huntington Library has an interesting map entitled "Map of North America
with Hudson's Bay and Straits, Anno 1748." The map is by R. W. Seale and
bears both the Royal Coat of Arms and the Arms of the Hudson's Bay Company.
Map dimensions are 42 cm vertical by 80 cm horizontal, it is a hand colored
Leon Kashnor, from whom the Huntington acquired the map in the 1920's,
that the map was privately issued by the Hudson's Bay Company as evidence
a Parliamentary inquiry instigated by those opposed to the Company's
monopoly. The map shows a near connection between the Great Lakes and La
Hontan's mythical Long River. Westward, another short portage from that
would allow access to the Western Sea. The Mississippi River also connects
with the Long River. Kashnor felt the map was issued to attempt to show an
alternate North-West Passage and take heat off the HBC for not exploring
their area further. The map is curious since Seale had done earlier maps
better geography, Kashnor suggests the contents were dictated to Seale. In
any case, the strategy must have backfired because Kashnor says all copies,
save this one, were destroyed.
My question then is, are there in fact other copies of this map in existence?
If the map proves of interest, I'll seek permission to post an image on the MapHist website.