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 1879." "Geology of the Black Hills by Henry Newton, E.M."--Upper right margin.
Creator:
Newton, Henry, 1845-1877.; Powell, John Wesley, 1834-1902.; Geological and Geographical Survey of the Rocky Mountain Region (U.S.)
Created:
1879
Contributed By:
University of Minnesota Libraries, John R. Borchert Map Library.