Born-Digital or AnalogAnalogTranscriptEmma placer mine Aspen district Colorado Process for working; gold clean ups Conundrum gulch. R.M.Hews. Sept. 18, 1885 p. 6 c.3 Hydraulic pipes & nozzle placed, Conundrum gulch. R.M.Hews. Oct. ?, 1885 p. 2 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Emma placer mine Aspen district Colorado, [237928]. Denver Public Library Digital Collections, accessed 13/01/2026, https://digital.denverlibrary.org/nodes/view/1480441
