On board Northern Pacific diesel locomotive assisting troop train Passenger Extra 2601 West near Easton, Washington, circa 1945. Looking back from cab at diesel units, Class A Northern-type steam locomotive number 2601, eight passenger cars. Photo by J.M. Fredrickson. Other Subject Classes: troop train, diesel locomotive, steam locomotive, passenger car, mountains

Northern Pacific work train at Tacoma, Washington, in 1889. American-Standard-type steam locomotive heads train of construction cars, railroad workers observe activity. J.M. Fredrickson Collection. Other Subject Classes: work train, steam locomotive, railroad crew

Builder photo of Construction Number 1113 showing right side of Northern Redwood Lumber Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania in January 1907. This locomotive was unusual as it was built to a gauge of 45 1/4 inches and was used for logging at Korbel, California. It was later changed to standard gauge in 1921. Photograph by Schauble.

Builder photo of Construction Number 1193 showing right side of Northern Redwood Lumber Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in February 1910. This locomotive was unusual as it was built to a gauge of 45 1/4 inches and was used for logging at Korbel, California. It was later changed to standard gauge. Photograph by Schauble.

Builder photo of Construction Number 1447 showing right side of 45 1/4 inch gauge Northern Redwood Lumber Company 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in January 1921. This locomotive was used for logging near Korbel, California. Photograph by Schauble.

Northwestern Logging Company three-truck Shay steam locomotive number 1 pauses with a loaded log train on a trestle near Kerriston, Washington circa 1925. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, geared locomotive, log train.

Northwestern Logging Company three-truck Shay steam locomotive number 1 pauses with a loaded log train on a trestle near Kerriston, Washington circa 1925. J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, geared locomotive, log train.

Builder photo of Construction Number 1200 showing left side of Nusbaum Chemical Company 18 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in March 1910. This locomotive was used for logging near Bradford, Pennsylvania and the wood was used to make wood alcohol, acetate of lime and charcoal. Photograph by Schauble.

Oahu Railway & Land Company steam locomotive number 6 in 1979. Number 6, a narrow gauge Baldwin 0-4-2T built in May 1889, on display at the Hawaiian Railway Society Museum on Oahu. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, display.

Oahu Railway & Land Company steam locomotive number 6 in 1979. Number 6, a narrow gauge Baldwin 0-4-2T built in May 1889, on display at the Hawaiian Railway Society Museum on Oahu. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, display.