1. Colorado, Pikes Peak quadrangle Yale Public content 1909. 2011-05-17T19:39:20Z. 2015-10-21T14:59:23Z. Geological Survey (U.S.). The Survey. English. Public. El Paso County (Colo.), Fremont County (Colo.), Jefferson County (Colo.), Park County (Colo.), and Teller County (Colo.).