TY - RPRT TI - Geologic maps of the Eureka Gulch area, Central City district, Gilpin County, Colorado AU - P.K. Sims AU - Edwin Wilson Tooker AU - Frank W. Osterwald PY - 1954 DO - 10.3133/ofr54286 UR - https://pubs.usgs.gov/publication/ofr54286 ID - ofr54286 ER -