1. Sectional map of Koochiching County, Minnesota, 1912 Maps University Of Minnesota Public content 1912. E.C. Bridgman Maps (Firm) and Ogaard, Louis A. Cartographic Details: Scale approximately 1:120,000 (W 94°27'--W 93°03'/N 48°45'--N 47°49'). 86 x 92 centimeters Scale approximately 1:120,000 Minn... E.C. Bridgman, Maps (New York).