Born-Digital or AnalogAnalogTranscriptCopper Rock, Colorado Discoveries in new camp. Colo. Sun. Feb.l4, 1892 p.4 c.7 New mining caup in Boulder Go. Colo. Sun. Mar.6, 1892 p.16 (2 Col.) Boulder County ghost town. Boulder Da. Camera July 2, 1956 P.4 vae. ed. Gold King mine is near Copper Rock in Boulder County. Times Feb. 69 1899 p.2 c.6CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
