1941. 2020-01-22T19:32:01Z. 2020-01-29T22:36:02Z. United States. Forest Service. The Office, Engineer Reproduction Plant, the Army War College). English. cartographic image. Public. Chippewa National Forest (Minn.), Minnesota, and Chippewa National Forest.
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1941. 2012-03-15T15:34:12Z. 2015-10-21T15:21:35Z. United States. Bureau of the Census. U.S. G.P.O. English. Public. Minnesota.
