1. Lake Superior International Highway : from Duluth to Fort William-Port Arthur through the beautiful arrowhead country of Minnesota along the "deep sea water" to the land of the Nipigon, Canada. Maps University Of Minnesota Public content 1920. 55 x 44 centimeters folded to 23 x 11 centimeters Scale approximately 1:805,000. General Minnesota Maps. [publisher not identified], (Minnesota?).