Born-Digital or AnalogAnalogTranscriptCOAL. COLORADO. GOLDEN DISTRICT, COLORADO Leyden mine accident. 1870 Leaf species; coal beds. 1873.p.2 c.2 Accident, James Proutt's mine. R. M. News. Dec. 1, 1879. p.1 C.5 Employment; wages; production, 1878-1879. R. M. News. Jan. 1, 1880. p.20 c.1 Activities, Colo. limited ca. R. M. News. Oct. 21, 1877. p.4 c.5 :0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
COAL. COLORADO. GOLDEN DISTRICT, COLORADO, [181361]. Denver Public Library Digital Collections, accessed 13/05/2025, https://digital.denverlibrary.org/nodes/view/1525541
