Born-Digital or AnalogAnalogTranscriptArrighi mill. Gregory district Colorado Activities, Mack lode; yield. R. M. News. 3uly 10, 1868. p.4 c.3 Facts on operation. Dy.Cent.City Reg.May 7, 1871. p.1 c,4 Daily central city register 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Arrighi mill. Gregory district Colorado, [22663]. Denver Public Library Digital Collections, accessed 14/02/2026, https://digital.denverlibrary.org/nodes/view/1182332
