Born-Digital or AnalogAnalogTranscriptDecatur mining company ^ Of New York; operate W. extension, Helmer mine, Gilpin co. R. M. News. Dec. 30, 1880 p.2 c.3 Operating Decatur mine, Central City district Colorado . R. M. News. Aug. 6, 1882 p.6 c.3 Operates Helmer ext. mine, Central City dist, Colo. R. M..News. Dec. 13, 1881 p.6 e.1 Helmer shaft activites, Colo. R.M.News. Mar. 5,1882 p:3 c.1 Owns Helmer lode, Central City disc. Colo. R.;News. Mar. 8,1882 p:' c.1 40CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Decatur mining company ^, [183765]. Denver Public Library Digital Collections, accessed 20/05/2025, https://digital.denverlibrary.org/nodes/view/1527927
