2022-12-082022-12-08https://hdl.handle.net/11124/15596Scale approximately 1:360. 30 feet = 1 inch.Photocopy.Blueline print.Shows mining claims, tunnel and shafts, located in Sec.13, T.3 S., R.73 W., also known as Illinois Central Mining District.16 x 29 cmmine mapsengNo Known Copyright: http://rightsstatements.org/vocab/NKC/1.0/.Mines and mineral resources -- Colorado -- Gilpin County -- MapsRoderick Dhu Gold Mining Co., Gilpin County, Colo.Roderick Dhu Gold Mining Company, Gilpin County, ColoQuartz Hill mining districtIllinois Central mining districtStillImage