Lot of two. 1) 1886 letter from Omaha & Grant Smelting & Refining Co. to Henry Knippenberg, who was the general manager of the Hecla Mining Co. in Glendale, Montana. The letter is about assaying: "I do not know where you can get an assayer...There are generally a good many idle around Denver and Leadville." "Our assays of your bullion have been running lower than yours for several months, in many cases as much as five ounces per ton. I have attributed this to sampling..." 2) Interesting reproduction letter from Mrs. Granville Stuart that serves as a promotional piece for the Silver Hills Mine company in Butte. Granville Stuart, known as "Mr. Montana," was a pioneer, gold prospector, businessman, civic leader, vigilante, author, cattleman and diplomat who played an important ole in the early history of Montana Territory and the state of Montana. State: Montana City: Date: