Reports of Wm. A. Burt and Bela Hubbard, esqs., on the geography, topography and geology of the U.S. surveys of the mineral region of the south shore of Lake Superior, for 1845 accompanied by a list of working and organized mining companies; a list of mineral location, and a correct map of the mineral region also a chart of Lake Superior, reduced from the British admiralty survey - Houghton, Jacob jr (Wilcox, 1846)