Born-Digital or AnalogAnalogTranscriptHitchings John A Letter advertised, Denver. R.M.News. Mar. 39,1873 p,1 Q,4 Inventor, receives patent for quartz mill, description, R.M'News. June 4, 189F p.4 c .2 /Denver.CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng