Klamath & Hoppow Valley Railroad steam locomotive number 10, a three-truck Heisler, hauls a tourist train near Klamath, California, in 1973. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, geared locomotive .

Klamath & Hoppow Valley Railroad steam locomotive number 10, a three-truck Heisler, rests between tourist trips at Klamath, California, in 1973. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, geared locomotive .

Klamath & Hoppow Valley Railroad steam locomotive number 10, a three-truck Heisler, rests between tourist trips at Klamath, California, in 1973. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, geared locomotive .