Historically Interesting Original Autograph Manuscript Letter by an Early Alaskan Business Owner and an Executive-Level Employee of Sumdum Mining Company, Writing to His Folks Back Home about his Mine-Developing Company, Detailing the Mine-Selecting Process, and Mentioning Sumdum’s Pioneer Entrepreneurs (H. T. Tripp and J. C. McBride). Sumdum, Alaska: 23 September 1899.