Sebben, Edward W.2017-07-182022-02-032017-07-182022-02-031900?-1909https://hdl.handle.net/11124/171072Scale 1:2,400. 1 inch = 200 feet.Manuscript copy.Covers parts of Boulder County, Colorado. Covers parts of the Nederland quadrangle, Colorado.27 x 35 cmmanuscript mapsmine mapsengMining claims -- Colorado -- Boulder County -- MapsMines and mineral resources -- Colorado -- Boulder County -- MapsStillImage