Hon. Samuel T. Hauser, President of the First National Bank of Helena, and later Governor of Montana. Walter Trumbull, son of the late Senator Trumbull. He published an account of the expedition in the _Overland Monthly_ for June, 1871.[AC] [AC] See Appendix E. Other civilian members of the expedition were Benjamin Stickney, Jr., Warren C. Gillette, and Jacob Smith. The personnel of this party is sufficient evidence of the wide-spread interest which was being taken at the time in the region of the Upper Yellowstone. The party proceeded from Helena to Fort Ellis, one hundred and twenty-five miles, where they were to receive a military escort promised by General Hancock, at that time commanding the department in which Fort Ellis was located. The post order detailing this escort is dated August 21, 1870, and directs Lieutenant Gustavus C. Doane, Second Cavalry, with one sergeant and four privates, "to escort the Surveyor-General of Montana to the falls and lakes of the Yellowstone and return." There is a significant absence in this order of any reference to geysers or hot springs; and the discreet post commander evidently did not intend to commit himself to a recognition of their existence on the strength of such knowledge as was then available. His incredulity was indeed largely shared by the members of the party themselves. Mr. Hedges subsequently said: "I think a more confirmed set of skeptics never went out into the wilderness than those who composed our party, and never was a party more completely surprised and captivated with the wonders of nature." Lieutenant Doane, than whom no member of the expedition holds a more honorable place in its history, has left on record a similar confession. The party as finally organized, including two packers and two colored cooks, numbered nineteen individuals. Thirty-five horses and mules, thoroughly equipped for a month's absence, completed the "outfit," and made altogether quite an imposing cavalcade. August 22, 1870, the expedition left Fort Ellis, crossed to the Yellowstone, and ascended that stream through the First and Second Cañons, past the "Devil's Slide" and Cinnabar Mountain, to the present north boundary line of the Park at the mouth of the Gardiner River. At this point they were within five miles of the celebrated Mammoth Hot Springs which are now the first attraction to meet the tourist's eye on entering the Park. But the party kept close to the Yellowstone, instead of taking the modern route up the Gardiner, and missed this wonder altogether.