"Compiled by USGS from 1:24,00-scale topographic maps dated 1972-1978. Partially revised from aerial photographs taken 1975. Map edited 1979."; "Projection and 10 000-meter grid ticks, zone 13: Universal Transverse Mercator."; "25 000-foot grid ticks based on Colorado coordinate system, north zone."; Sheet 1 has text on verso.; Includes location diagram. on 3 sheets 59 x 89 and 59 x 59 centimeters Scale 1:100,000