Born-Digital or AnalogAnalogTranscriptMatt O'Brien and company Proposed development, Delaware mine, Central City dist.,Colo. R.I!'.News. Aug. 31, 1884 p.3 c.1 Operates Delarare lode, Central City district, COLORADO R.A_.RTews. Sept. 17, 1884 p.3 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Matt O'Brien and company, [411191]. Denver Public Library Digital Collections, accessed 14/02/2026, https://digital.denverlibrary.org/nodes/view/1792790
