1970. Craddock, Campbell, Kolehmainen, V., and Mooney, Harold Morton. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ... Minnesota Geological Survey.
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1863. United States. General Land Office. Cartographic Details: Scale 1:1,040,480. "St. Paul, October 19th, 1863." Above neat line at right: "Ho. Reps. ex. doc. no. 1, 38th Cong., 1st sess.... U.S. Congress; Washington, D.C. 1863.
1862. United States. Surveyor General. Cartographic Details: Scale [1:1,140,480]. 18 miles to an in. At head of title: (F). House ex. doc. Number 1, 37th Cong., 3d sess. (Serial 1160). 5... GPO; Washington, D.C. 1862.
1856. Emerson, Charles L., Lithy, Graham, and United States. General Land Office. Cartographic Details: Scale 1:1,140,480. 18 miles to an in. From: U.S. 35th Cong., 1st sess., 1857-1858. Senate doc. -- volume 5, no. 11. -- (Seria...
1968. Map of Slope prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000 Bounding... Wallace, McHarg, Roberts and Todd.
1436. Slopes - Generalized
1968. Bounding Box (W,S,E,N): -93.9791,44.4981,-92.8021,45.361 Ecological Study for the Twin Cities Metropolitan Area. Wallace, McHarg, Roberts and Todd.
1929. United States. Bureau of Chemistry and Soils. Base map in part from U.S. Geological Survey sheets. 83 x 78 Centimeters Scale 1:62,500 Minnesota County Maps, Plat Books, and Atlases. Field Operations, Bureau of Chemistry and Soils (Washington, D.C.?).
1929. United States. Bureau of Chemistry and Soils. 63 x 67 Centimeters Scale [1:63,360] Minnesota County Maps, Plat Books, and Atlases. Field Operations, Bureau of Chemistry and Soils (Washington, D.C.?).
1923. United States. Bureau of Chemistry and Soils. 63 x 78 centimeters Scale [1:63,360] Minnesota County Maps, Plat Books, and Atlases. Field Operations, Bureau of Soils (Washington, D.C.?).
1916. United States. Bureau of Chemistry and Soils and University of Minnesota. Agricultural Experiment Station. Cartographic Details: Scale approximately 1:49,000. Not "1 in. = 1 mi." (W 93°30 ª--W 93°00 ª/N 45°25 ª--N 45°00 ª). Enlarged reproduction. "Soils ... Snyder & Black (New York).