Born-Digital or AnalogAnalogTranscriptEast bobtail mine. Gilpin county, Colorado A Gold bullion shipments. R. M. News. Nov. 20, 1879. p.3 c.1 Production. R. M. News. Tan. 1, 3.880. p.21 c.1 Stamps in use. R.M. News. Pray 5, 1880. p.3 C.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
East bobtail mine. Gilpin county, Colorado, [230660]. Denver Public Library Digital Collections, accessed 21/01/2026, https://digital.denverlibrary.org/nodes/view/1504239
