1922. Hudson Map Company. Cartographic Details: Scale approximately 1:920,000.Includes "Camp sites and driving distances from Minneapolis."Duluth and Superior -- Minneapolis... Hudson Map Company (Minneapolis, Minnesota), 1922.
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1899. Wisconsin Geological and Natural History Survey. "Nov. 1899."; Relief shown by hypsometric tints, bathymetric isolines and soundings.; "Contour interval = 10 ft."; Includes 3 cross sections.; Acco... Wisconsin Geological and Natural History Survey (Madison, Wis).
1899. Contour interval = 10 ft.; At head of cover title: no. 6.; Explanation of map on 2nd page of cover.; Shows roads, parks, hotels, drainage, etc.; De... The Survey (Madison, Wis).
1898. Relief shown by hypsometric tints, bathymetric isolines and soundings.; "Contour interval = 10 ft."; Accompanied by description on cover.; Shows ro... The Survey (Madison, Wis).
1899. Relief shown by hypsometric tints, bathymetric isolines and soundings.; "Contour intervals 10 feet."; At head of cover title: no. 5.; Explanation o... The Survey (Madison, Wis).
1898. Contour interval = 10 ft.; Relief shown by hypsometric tints, bathymetric isolines, and soundings.; Shows roads, railroad, public buildings, parks,... The Survey (Madison, Wis).
1908. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1906.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1918. Geological Survey (U.S.). Surveyed in 1917.;Surveyed in cooperation with the War Department and the State of Illinois.";Relief shown by contours and spot heights.;1 map, col... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1923. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1919-1920.";"Surveyed in cooperation with the States of Illinois and Wisconsin.";Relief shown by contours an... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Geological and Natural History Survey (Madison, Wis.).
1937. Geological Survey (U.S.). Surveyed in 1932.;Contour interval 10 feet.;Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).