Born-Digital or AnalogAnalogTranscriptOntario mine. Breckenridge district colorado Development. 1884 Proposed h.r'. YeK-a. May 31, 1884 p.6 c.1 Ore strike. R.11. News. Aug. 19, 1886 p.6 c.1 Character of ore. R.M. gems. Mar. 27, 1882 p.4 0.3 Character of ore; activities. -R -M. News. Jan. 25, 18E? 0 P 3 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Ontario mine. Breckenridge district colorado, [467568]. Denver Public Library Digital Collections, accessed 15/11/2025, https://digital.denverlibrary.org/nodes/view/1626480
