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,

Northern Pacific diesel locomotive number 6507 in the station at Pasco, Washington, on May 21, 1951. NP 6507 is an F-7 built by Electro Motive Division of General Motors Company in 1949. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,

Northern Pacific diesel locomotive number 6508 at the station in Pasco, Washington, on August 15, 1949. NP 6508 is an F-7 built by Electro Motive Division of General Motors Company in 1949. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,

Northern Pacific diesel locomotive number 6508 at the station in Pasco, Washington, on August 15, 1949. NP 6508 is an F-7 built by Electro Motive Division of General Motors Company in 1949. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,

Northern Pacific Number 7004D, an Electro-Motive Division (EMD) Type F9A, at Pasco, Washington, June 1969.

Northern Pacific Number 7010A, an Electro-Motive Division (EMD) Type F9A, at Pasco, Washington, June 1968.

Northern Pacific Number 7010A, an Electro-Motive Division (EMD) Type F9A, at Pasco, Washington, June 1968.