1924. Gruner, John W. (John Walter), 1890-. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Western Mesabi District, Minneso... Minnesota Geological Survey.
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1924. Gruner, John W. (John Walter), 1890-. Longitudinal Section through the Biwabik and Gunflint Formations, scale 1 inch = 1.5 miles. Minnesota Geological Survey.
1964. Sloan, Robert E. (Robert Evan), 1929-. Map of Minnesota showing localities of Cretaceous rocks described in the RI-5 report, scale 1 inch = about 35 miles. Minnesota Geological Survey.
1964. Sloan, Robert E. (Robert Evan), 1929-. Contour map (lines of equal elevation) of the present altitude of the Pre-Cretaceous unconformity (erosional surface cut into older rocks) in Minne... Minnesota Geological Survey.
1969. Karklins, O.L. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Precambrian rocks of the Granite... Minnesota Geological Survey.
1990. Kanivetsky, Roman, Morey, G.B., and Setterholm, Dale R. Map showing the distribution of Arsenic in ground water and rocks in southwestern Minnesota, scale 1 inch = 7.5 miles. Minnesota Geological Survey.
1986. Morey, Daryl D. and Morey, G.B. Map showing the distribution of iron-formation rocks along the main Cuyuna iron range, scale 1:48,000. Minnesota Geological Survey.
1995. Racine County Public Works and Development Services. This polygon data layer represents environmental corridors for Racine County, Wisconsin in 1995.
2000. Racine County Public Works and Development Services. This polygon data layer represents environmental corridors for Racine County, Wisconsin in 2000.
2001. Metro Data Resource Center. This polygon data layer represents environmental conservation and preservation zones for the City of Portland, Oregon. The dataset was originally p...