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You searched for: Author Minnesota Geological Survey. Remove constraint Author: Minnesota Geological Survey. Format JPEG Remove constraint Format: JPEG Subject Thematic maps Remove constraint Subject: Thematic maps Collection John R. Borchert Map Library Remove constraint Collection: John R. Borchert Map Library Data type Image Remove constraint Data type: Image
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1. Peat deposits of Beltrami County, Minnesota showing location of soundings and depth of peat and topography of the surface of the

1915. Minnesota Geological Survey. Scale not given (W 95°36ʹ00ʺ--W 94°24ʹ00ʺ/N 48°59ʹ00ʺ--N 47°24ʹ00ʺ). Relief shown by contours. "Plate II" in upper right corner. "Compiled from fie...