Born-Digital or AnalogAnalogTranscriptMines and mineral resources. Colorado. Gregory district. Black Hawk, Eagle & Tiger mills yield. R.M. News. July 2, 1863 p.2 c.4 Mill & claims for sale. R.M. News. Aug. 15, 1863 p.3 c.3 Property advertised. for sale; lodes; list. R.M. News. May 8, 1865 p.2 c.5 Discovery near Sensenderfer pill; formation. R.M. News. Feb. 24, 1866 p.3 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Mines and mineral resources. Colorado. Gregory district, [426757]. Denver Public Library Digital Collections, accessed 18/01/2026, https://digital.denverlibrary.org/nodes/view/1418801
