Northern Pacific steam locomotive 603 at Philadelphia, Pennsylvania, in 1909. This is a builder's photo of Number 603 which was a class N-1 built by Baldwin in 1909. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Pennsylvania Railroad diesel locomotive 6893 at Pittsburg, Pennsylvania on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Pennsylvania Railroad Interlocking control tower at Pittsburg, Pennsylvania, on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: control tower

Builder's photo of Puget Sound & Cascade Railway Baldwin 2-8-2 steam locomotive number 200 (construction number 44106) at Philadelphia, Pennsylvania, in September 1916. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive, builder's photo

Builder's photo of Puget Sound & Cascade Railway Baldwin 2-8-2 steam locomotive number 200 (construction number 44106) at Philadelphia, Pennsylvania, in September 1916. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive, builder's photo

Spokane, Portland & Seattle Railway steam locomotive number 702 at Philadelphia, Pennsylvania, in 1937. The builder's photo of SP&S 702. Photo by Baldwin Locomotive Works, J.M. Fredricson collection. Other Subject Classes: steam locomotive, display.

Builder's photo of Walville Lumber Company two-truck Heisler steam locomotive number 4 at Erie, Pennsylvania, circa 1920. Photo by Heisler Company, J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, geared locomotive, logging locomotive.

Builder's photo of Wenatchee Valley & Northern Railroad two-truck Heisler steam locomotive number 103 at Erie, Pennsylvania, circa 1925. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, geared locomotive, builder's photo

Builder's photo of Yosemite Valley Railroad Baldwin 2-6-0 steam locomotive number 29 (construction number 55275, built in 1922) at Philadelphia, Pennsylvania, in February 1922. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, builder's photo.