as a worthy partner. Gunn, an Ohian who attended Oberlin and Ohio State University, had worked his way up to mine superintendent when he met Thompson in Helena. The two later became a powerful team (not as Hagedorn writes) after they met again while Gunn was with Guggenheim Exploration, mine finders, and Thompson with Hayden, Stone & Company brokerage. Their Gunn-Thompson partnership was searching in all the major new porphyry districts and developed a number of the major mines by the time heart disease impacted Gunn's abilities, then his death a year later March 11, 1913. Gunn the mine finder was a perfect match for Thompson the broker and high wheeling financier. Gunn had the talent in Salt Lake City on his staff or as consultants next door to find the mines—Mason Valley, Inspiration, Magma, for example—while Thompson had the connections to finance the developments. Again, many of the tall tales Hagedorn relates about the pre-1913 era, especially about Gunn, need correctives: Gunn's eyes were not gray they were blue and one needs to discount the rest of Hagedorn's description of his intellect and appearance; he was not buried by an ex-con and the boys, but by the Masonic lodge he had long been a member of and by a reverend, Hagedorn to the contrary. Same could be said of Hagedorn's depictions of and roles of Philip Wiseman, Henry Krumb, Fred Flindt, Walter Aldridge and others. For a more balanced but still dated account see A. B. Parsons, The Porphyry Coppers. References External links Time Magazine review of H. Hagedorn's Biography (1935) Boyce Thompson Arboretum Boyce Thompson Arboretum Biography of its founder William Boyce Thompson, An Enduring Legacy in Yonkers Boyce Thompson Institute for Plant Research Wright-Martin Formation 1869 births 1930 deaths People from Virginia City, Montana People from Arizona American engineers American philanthropists American mining engineers American mining businesspeople Burials at Sleepy Hollow Cemetery Montana Republicans New York (state) Republicans People from Butte, Montana Phillips Exeter Academy alumni Deaths from pneumonia in New York (state)