Born-Digital or AnalogAnalogTranscriptDiamond tunnel. Clear-Creek county, Colorado Mentioned. R.M.News.Apr.30,1880 p.3 c.1 Contract let to work. R.M.News. Dec.4,1880 p.3 c.1 Yield. R X News .Feb . 2^;,1881 p.3 c.1 Activities, to connect Corry City mines R. 1-4. News .Aug.277,1884 p.R c.? Development. R.M.News.Jnne 4,18'75 p.4 c.3 Progress of development. R. M. New s.Aug.?7,1874 p.4 c.4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Diamond tunnel. Clear-Creek county, Colorado, [216672]. Denver Public Library Digital Collections, accessed 15/03/2025, https://digital.denverlibrary.org/nodes/view/1332794
