Platt, Howard2017-08-102022-02-032017-08-102022-02-031897https://hdl.handle.net/11124/171326Scale 1:360. 30 feet to one inch.Color.Shows claims and underground workings.Title taken from verso.Covers parts of Clear Creek County, Colorado.91 x 147 cmmanuscript mapsmine mapsengMining claims -- Colorado -- Clear Creek County -- MapsMines and mineral resources -- Colorado -- Clear Creek County -- MapsStillImage