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.

Northern Pacific Engineering Drawing: 72 Foot Track Scale, Electronic Track Scale, Pasco, Washington, Line Segment 046. Sheet 237 - 6547, undated.

Northern Pacific Engineering Drawing: 72 Foot Track Scale, Electronic Track Scale, Pasco, Washington, Line Segment 046. Sheet 2 7 - 6547, undated.

Northern Pacific Engineering Drawing: 72 Foot Track Scale, Electronic Track Scale, Pasco, Washington, Line Segment 046. Sheet 237 - 6547, undated.