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Canadian Museum of Civilization
"The Grand Portage is the Key to that part of British America. It is indispensably necessary;" McTavish and his cohorts told the government in 1792, "that the Grand Portage be thrown into our hands, or at any rate, that it be considered an open highway, equally belonging to both parties (United States & British Canada)…Without this, even the part of the North West still within our limits would become useless." Gilman, The Grand Portage Story page 75.