1936. Minnesota. Department of Highways and United States. Bureau of Public Roads. Cartographic Details: Scale 1:48,000 , Polyconic projection (W 97°15'--W 89°30'/N 49°23'--N 43°30'). Title supplied by cataloger. Blue line print. ... The Dept. (Minnesota).
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1882. Wisconsin. Chief Geologist. Relief shown with form lines. Includes cross-sections: On E.E. -- On C.D. -- On A.B. "Plate No. IIC." "The Milwaukee Litho. & Engr. Co." 68 x... Commissioners of Public Printing (Madison).
1882. Chamberlin, Thomas C. (Thomas Chrowder), 1843-1928. Scale is approximate (W 93⁰--W 87⁰/N 47⁰--N 42⁰30ʹ) 69 x 59 centimeters Scale approximately 1:960,000 General Map Collection. Commissioners of Public Printing (Madison).
1881. Chamberlin, Thomas C. (Thomas Chrowder), 1843-1928. Scale is approximate (W 93⁰--W 87⁰/N 47⁰--N 42⁰30ʹ) 69 x 59 centimeters Scale approximately 1:960,000 General Map Collection. Commissioners of Public Printing (Madison).
1918. Whitson, A. R. (Andrew Robeson), 1870-1945. 6 mi. to 1 in. (W 92°52ʹ--W 86°45ʹ/N 47°07ʹ--N 44°30ʹ). "Based on the work of the Soils and Geological Divisions of the Wisconsin Geological and ... Wisconsin Geological and Natural History Survey (Madison).
1882. Chamberlin, Thomas C. (Thomas Chrowder), 1843-1928. Scale is approximate (W 93⁰--W 87⁰/N 47⁰--N 42⁰30ʹ) Relief shown with form lines. Includes cross-sections: On E.E. -- On C.D. -- On A.B. "Plat... Commissioners of Public Printing (Madison).
1910. Geological Survey (U.S.). Marginal legend and cross sections. "Base map compiled by the U. S. Geological Survey from U. S. Geological Survey atlas sheets, Land Office reco... U.S. Geological Survey (Washington, D.C.?).
1910. Geological Survey (U.S.). Monograph LII Plate IV. 23 x 119 centimeters Scale 1:125,000 General Map Collection. A. Hoen & Co (Baltimore).
1897. Geological Survey (U.S.). 1 map : col. ; 24 x 35 cm. Eighteenth Annual Report Part IV PL. XXXIV. J. Ottmon Lith. Co., NY.
1879. Geographical and Geological Survey of the Rocky Mountain Region (U.S.), Newton, Henry, 1845-1877, and Powell, John Wesley, 1834-1902. 1 in. = 4 miles. (W 104°45ʹ--W 102°15ʹ/N 44°45ʹ--N 43°30ʹ). Relief shown by contours, hachures and spot heights. "Field work 1875. Publication ... U.S. Geological Survey (Washington, D.C).