Born-Digital or AnalogAnalogTranscriptSpar number two mine. Aspen district. Colorado Struck rich mineral. R.M.News. May 7, 1881 p.4 c.3 Formerly known as Circassian girl mine. R.M.News. May 11, 1881 p.3 c.4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Spar number two mine. Aspen district. Colorado, [575908]. Denver Public Library Digital Collections, accessed 17/06/2025, https://digital.denverlibrary.org/nodes/view/1686677
