1. Geologic map of the Crystal Falls district, including parts of the Felch Mountain and Marquette districts, Michigan : corrected to January 1, 1909 Maps University Of Minnesota Public content 1909. Geological Survey (U.S.). Marginal legend.; Relief shown by contours. 48 x 48 centimeters Scale 1:125,000 General Map Collection. The Survey (Washington, D.C).