@book{172255,
	author = {Stevenson, John James. and White, C. A. and Geographical Surveys West of the 100th Meridian (U.S.)},
	title = {Report upon geological examinations in southern Colorado and northern New Mexico },
	publisher = {Goverment Printing Office, },
	year = {1881.},
	series = {Engineer department, U.S. Army. Report upon United States Geographical surveys west of the one hundredth meridian ; },
	address = {Washington : }
}