Born-Digital or AnalogAnalogTranscriptDiamond tunnel. Clear Creek county, Colorado Location, construction, 1866-1870. Vickers.Clear Creek & Boulder. p.283 Description; tunnel length. R.M.News.luly 14,1880.p.3 c.1 Owner; description. Vickers.Clear Creek.& Boulder. p.313 Development. R. M. News. Oct. 16, 1875. p.6 c.1 Activities; litigation. R. M. News. Jan. 1, 1880. p.5 c.3CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Diamond tunnel. Clear Creek county, Colorado, [216673]. Denver Public Library Digital Collections, accessed 14/11/2025, https://digital.denverlibrary.org/nodes/view/1332796
