Topographic surveying; including geographic, exploratory, and military mapping, with hints on camping, emergency surgery, and photography (1905)
Wilson, Herbert Michael, 1860-1920 · New York : J. Wiley · leaf 126
FIG. 21 PORTION OF U.S. GEOLOGICAL SURVEY MAP ABOUT {{w|Cripple Creek, Colorado|CRIPPLE CREEK}}, NEAR {{w|Pikes Peak|PIKE'S PEAK COLO}}. 1894<br>Scale 1 tot 25,000. Contour Interval 50 ft.<br> … FIG. 22 PORTION OF U.S. GEOLOGICAL SURVEY MAP ABOUT {{w|Cripple Creek, Colorado|CRIPPLE CREEK}}, NEAR {{w|Pikes Peak|PIKE'S PEAK COLO}}. 1894<br>Scale 1 tot 25,000. Contour Interval 50 ft.<br>85