Born-Digital or AnalogAnalogTranscriptmines mineral resources colorado summit county Jumbo mine to operated on more extensive scale. Times F S, 1899 p.4 c.3 denver placer mining in French gulch, where experiments failed. Times Ap l, 1899 p.2 c.2 world wide reputation as placer gold region, now mother lode on said mountain is to be opened up with free milling proposition. Times My 26, 1899 p.1 c.7 New developments on blue river. Times Jy 20, 1899 p.6 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
mines mineral resources colorado summit county, [435559]. Denver Public Library Digital Collections, accessed 19/01/2026, https://digital.denverlibrary.org/nodes/view/1429845
