Northern Pacific 49.5-foot, 3-bay, covered hopper car number 75683 on a siding at Amarillo, Texas, on July 18, 1979. The car is part of the 75665-75689 number series. Photo by GJ Werkema. Other subject classes: freight car, covered hopper car

Northern Pacific 36-foot, 2-bay, covered hopper car number 75219 in a cut of cars at Amarillo, Texas, on August 6, 1980. The car is part of the 75200-75299 number series. Photo by GJ Werkema. Other subject classes: freight car, covered hopper car

Northern Pacific 41.5-foot, open hopper car number 85421 in a yard at Denver, Colorado, on June 23, 1972. The car is part of the 85100-85499 number series. Photo by GJ Werkema. Other subject classes: frieght car, open hopper car, Selective Ballast car

Northern Pacific boxcar 16696, at Amarillo, Texas, August 1973.

Northern Pacific 40.75-foot, box car number 49184 with a sliding door is in a yard at Amarillo, Texas, on December 12, 1979. The car is part of the 49050-49999 number series. Photo by GJ Werkema. Other subject classes: freight car, steel box car

Great Northern Hopper Car 70628 at Amarillo, Texas, October 12, 1976, Association of American Railroads Class MWB. Other subject classes: Hopper car

Great Northern Hopper Car 70412 at Amarillo, Texas, July 16, 1979, Association of American Railroads Class HT. Other subject classes: Hopper car

Great Northern Gondola 78516 at Amarillo, Texas, August 6, 1980, Association of American Railroads Class GB. Other subject classes: Gondola

Great Northern Flatcar 161340 at Amarillo, Texas, October 12, 1976, Association of American Railroads Class FMS, bulkhead. Other subject classes: Flat car

Great Northern Covered Hopper Car 71462 at Amarillo, Texas, August 6, 1980, Association of American Railroads Class LO. Other subject classes: Covered hopper car