Born-Digital or AnalogAnalogTranscriptHarlem mine. Black Hawk district colorado Ore specimen, National. exposition , Denver. R. M. News. Suly 20, 1882 p.3 c.2 Samples of ore, Natl. expos., Denver. R. M. News. July 24, 1882 p.7 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Harlem mine. Black Hawk district colorado, [295741]. Denver Public Library Digital Collections, accessed 06/02/2026, https://digital.denverlibrary.org/nodes/view/1383183
