Emmons, S. F.; et al. [MAP] Geological Map of Silver Cliff and the Rosita Hills, Colorado (1896). Baltimore: A. Roen & Co. Lith., (1896). 
21 x 32 1/2 inches, a beautiful and unusual color map showing the geology of this region, suitable for framing. Very good.
Extracted from the Seventeenth Annual Report, U. S. Geological Survey. The survey was done in 1883.