KHJ No. 10, a 3-truck Heisler locomotive on the Klamath & Hoppow Valley Railroad, 1972.

The railroad also owns a Climax locomotive and a Heisler enabling all three types to be seen.

A Heisler locomotive

The Heisler locomotive was the last variant 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.

In 1897, Heisler received a patent on a three-truck locomotive.

The Heisler was the fastest of the geared steam locomotive designs, and yet was still claimed by its manufacturer to have the same low speed hauling ability.

The first Heislers were built by the Dunkirk Engineering Company of Dunkirk, New York, at the time producer of their own design of geared locomotive ( called the dunkirk ), of which the Heisler could be considered an improvement.

A & G Price of Thames, New Zealand received an order for a Heisler locomotive in 1943 from Ogilvie and Co, sawmillers of Hokitika.

This locomotive went into service in 1944, 3 years after the last American built Heisler locomotive.

* A 75 ton 1918 Heisler locomotive is on static display at the Travel Town open air museum in Los Angeles.

* Another Heisler two truck locomotive can be found on static display next to the headquarter's building of the former Pacific Lumber Co. in Scotia California.

* A & G Price 148 ( the last Heisler designed locomotive

* Charles L. Heisler receives a patent for the Heisler locomotive.

* Charles L. Heisler builds a working prototype of what is to become the Heisler locomotive.

* Heisler locomotive, a geared steam locomotive

* Heisler Locomotive Works, the American locomotive construction firm

* Charles L. Heisler, American steam locomotive designer.