Northern Pacific 41.5-foot, open hopper car number 87546 on a siding at Denver, Colorado, on October 15, 1989. The car is part of the 87500-87749 number series. Photo by GJ Werkema. Other subject classes: frieght car, open hopper car, 77T Ballast Hopper

Northern Pacific 41.5-foot, open hopper car number 87609 on a siding at Broomfield, Colorado, on September 16, 1989. The car is part of the 87500-87749 number series. Photo by GJ Werkema. Other subject classes: frieght car, open hopper car, Rodgers Ballast car

Northern Pacific 41.5-foot, open hopper car number 87742 on a siding at Denver, Colorado, on April 23, 1989. The car is part of the 87500-87749 number series. Photo by GJ Werkema. Other subject classes: frieght car, open hopper car

Northern Pacific Railroad box car, number 207215 at Moon Yard in Tacoma, Washington in January, 1970, serving as material storage. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, box car.

Northern Pacific Railroad box car, number 207947, derelict, at Ridgefield, Washington in August, 1976. Single sheath Northern Pacific box car. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, box car.

Northern Pacific Railroad box car, number 207947, derelict, at Ridgefield, Washington in August, 1976. Single sheath Northern Pacific box car. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, box car.

Northern Pacific Railroad box car, number 207947, derelict, at Ridgefield, Washington in August, 1976. Single sheath Northern Pacific box car. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, box car.

Northern Pacific Railroad bunk car, number 200841, out of service at Tacoma, Washington in September, 1969. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, outfit car, maintenance of way.

Northern Pacific type GP 283 heading northbound at Vancouver in 1963. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Speeder.

Northern Pacific Railroad flat car, number 200190 at East Auburn, Washington in June, 1975, loaded with signal equipment. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, flat car, maintenance of way.