Northern Pacific steam tender used for storing diesel oil at Pasco, Washington, on October 4, 1971. Photo by GJ Werkema Other subject classes: Steam locomotive Tender.

Four helper engines push a train past the depot and water tank at Weston, Washington, circa 1911. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, water tank.

Two Northern Pacific class W-3 locomotives help a freight train up the South Tacoma Hill on the Prairie Line in Tacoma, Washington, circa 1953. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, helper locomotive, freight train.

Northern Pacific steam locomotives at Livingston, Montana, undated. Photograph by Wade Stevenson.

Northern Pacific Class A-1 Northern-type steam locomotive number 2626, followed by Class A number 2601, westbound at Lester, Washington, on December 13, 1955, heading a "Santa Claus special" of cars loaded with Holiday packages. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, mail train, mountains

Northern Pacific steam locomotives 120 and 160 parked at a logging camp in western Washington, circa 1915. Number 120 and 160 are class S compound locomotives built by American Locomotive Company at Schenectady, New York in 1900 and 1898 respectively. J.M. Fredrickson collection. Other Subject Classes: steam locomotive

Northern Pacific steam locomotive 2-6-0 poses with its crew, circa 1888. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive at Larson, Washington with train on Silver Beach trestle. Other subject categories: Train-Freight, Locomotive-Steam, W-x, Bridge-Trestle

A Northern Pacific engine, flat car and box car on a bridge on the South Bend Branch, Washington, circa 1894. J.M. Fredrickson collection. Other Subject Classes: freight train.

A Northern Pacific freight train on a bridge on the South Bend Branch, Washington. Photo by JM Fredrickson, J.M. Fredrickson collection. Other Subject Classes: freight train.