1875. Geological and Geographical Survey of the Territories (U.S.). Scale [1:253,440]. 4 miles = 1 in. From Powell's Exploration of the Colorado River ... l875. Relief shown by contours. Department of the Interior, ... The Survey.
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1877. Geological and Geographical Survey of the Territories (U.S.) and Hayden, F. V. (Ferdinand Vandeveer), 1829-1887. Shows drainage, road, etc. Relief by shown by contours (interval 200') and spot heights. From: its Report, 12th, 1878, v. 12:2, atlas. 1 map; 56 x ...