Born-Digital or AnalogAnalogTranscriptBlue River mining district Report by W. D. Gunning on geology. Canon City mining Gazette 1882 p.5 South Park Lode Highland Lode, McDonald's Flat and Pennsylvania Gulch discovered. RMN S 3, 1860 p.2, c.2 Claim opened by G. Page & Sons near head of French Gulch yields $104-30 in first six hours. RmN o 8, 1860CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Blue River mining district, [77302]. Denver Public Library Digital Collections, accessed 05/03/2026, https://digital.denverlibrary.org/nodes/view/1215298
