1. Reconnaissance geologic map of the Deer Peak guadrangle and southern part of the Hardscrabble Mountain quadrangle, Custer and Huerfano counties, Colorado [cartographic material] Yale Public content 1974. 2013-06-14T20:29:20Z. 2013-06-26T19:51:28Z. Taylor, Richard B. (Richard Bartlett). The Survey. English. Public. Colorado and Custer County.