Born-Digital or AnalogAnalogTranscriptCoal , Jefferson county, Colorado Description of Murphy and White Ash coal mines. , 1899. p.5 c.1 Golden City mineral and land company lessees; list. R. M. News. Dec. 8, 1870 'Accident, James Proutts' mine. R. M. News. Dec. 1, 1879. p.1 c.5 Accident, shaft no: 2- R. Ins. News. sept. 29, 1880.p.3 c.1 Boston co. refuses offer for coal land. R. M. News. Aug-11,1883 p.2 c.1 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Coal , Jefferson county, Colorado, [181436]. Denver Public Library Digital Collections, accessed 22/05/2025, https://digital.denverlibrary.org/nodes/view/1525627
