1. Peat deposits of Beltrami County, Minnesota showing location of soundings and depth of peat and topography of the surface of the Maps University Of Minnesota Public content 1915. Minnesota Geological Survey. Cartographic Details: Scale not given (W 95°36'00"--W 94°24'00"/N 48°59'00"--N 47°24'00"). Relief shown by contours. "Plate II" in upper right corn... The Survey (Minnesota), 1915.