Northern Pacific 50-foot boxcar 4632, a double-door car from the 4600-4699 series is pictured in the yard at Pasco, Washington, on February 14, 1981. Photo by GJ Werkema. Other subject classes: freight car, steel box car,

Northern Pacific 912 and 908 (part of the Burlington Northern since March 1, 1970), American Locomotive Company (ALCO) Type DL600's at Pasco, Washington, August 2, 1970.

Northern Pacific 912 and 908 (part of the Burlington Northern since March 1, 1970), American Locomotive Company (ALCO) Type DL600's at Pasco, Washington, August 2, 1970.

Northern Pacific diesel locomotive number 177 at the yard in Pasco, Washington, on September 24, 1948. NP 177 is an AS 615 built by Baldwin in 1948. The NP renumbered this unit to 525 in 1950. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific Number 2809, a General Electric Type U28C, at Pasco, Washington, June 1968.

Northern Pacific Number 3609, an Electro-Motive Division (EMD) SD45,at Pasco, Washington, June 1968.

Northern Pacific Number 377, an Electro-Motive Division (EMD) GP9, at Pasco, Washington, June 1968.

Northern Pacific Number 384, an Electro-Motive Division (EMD) GP9, at Pasco, Washington, June 1969.

Northern Pacific diesel locomotive number 553 in a yard. NP 553 is a GP-7 built by Electro Motive Division of General Motors Company in 1951. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 6504 in the station at Pasco, Washington, on September 24, 1948. NP 6504 is an F-3 built by Electro Motive Division of General Motors Company in 1947. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,