found: Work cat.: Clemons Logging Company Heisler locomotive 2, near Melbourne, ca. 1930, via the Clark Kinsey digital photographs collection, Oct. 26, 2006.
found: Wikipedia, Oct. 26, 2006("The Heisler locomotive was the last on the scene of the three major types of geared steam locomotive, Charles L. Heisler receiving a patent for the design in 1892 following the construction of a prototype in 1891.")
found: Geared Steam Locomotive Works Web site, Oct. 27, 2006:Heisler (Heisler Geared Steam Locomotives; the Heisler consisted of 2 steam cylinders positioned in a "V" under the boiler about 3/4th the way back from the front; it was the fastest of the 3 most prevalent geared steam locomotives)