Born-Digital or AnalogAnalogTranscriptBertha placer mine. Tin Cup district. Colorado mentioned. R.P.?.i?ews. Apr. 22, 1883 p.9 c:2 Producing coarser gold. R.'.`.News. July 22, 1884 p.fi c.2 Interest transfer, character of ore. R.M.News. May 13, 1984 p.& c.2 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Bertha placer mine. Tin Cup district. Colorado, [17015]. Denver Public Library Digital Collections, accessed 18/11/2025, https://digital.denverlibrary.org/nodes/view/1176854
