[Archive of Business Correspondence Detailing the Inner Workings of the Helena and Frisco Mining Company]
Frisco, Id. 1890-1897. Eighty-five documents, mostly autograph letters, signed, totaling 103 pages, almost all on some version of Helena & Frisco Mining Company letterhead. Original mailing folds, occasional minor foxing, smudging, or light staining, many with secretarial stamps reading "Received" or "Answered." All letters sleeved in chronological order in two..... More