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Start Over You searched for: Year 1929 Remove constraint Year: 1929 Place Canada; United States Remove constraint Place: Canada; United States Bounding Box -180 -89.81531 180 89.456192 Remove constraint Bounding Box: -180 -89.81531 180 89.456192

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2. Map of the surficial deposits of the Lake Superior region

Maps University Of Minnesota Public content
1929. Leverett, Frank, 1859-1943. Relief shown by contours.; "Base compiled by the U.S. Geological Survey." 56 x 92 centimeters Scale 1:1,000,000 General Map Collection. U.S. Geological Survey (Washington, D.C).