(CO.- Black Canyon) Topographic Map Of The Black Canyon Of The Gunnison National Monument, Colorado., U.S.G.S., 1950 A working map for the topography of Black Canyon that is stamped with "This combined proff is sent for your review and comments. Please make notations on the face of this map and return. Comments should reach us by AUG 17, 1950 to be included in the final copy." This black and white copy follows the Gunnison River well beyond both ends of the Black Canyon. Condition is very good. Image size is approximately 21 x 27 (inches)
