Born-Digital or AnalogAnalogTranscriptMcGregor lode. Silverton district. Colorado Activities, Ingersoll tunnel. Wt4 ODA. R. M. News. Mar. 30, 1877 p.4 c.4 Activities, Susquehanna tunnel. R. M. News. Apr. 24, 1877 p.3 c.4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
