1. Geochemical maps of the Coxcomb Mountains Wilderness Study Area (CDCA-328), Riverside and San Bernardino counties, California Yale Public content 1988. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. California, Riverside County, and San Bernardino County.