Northern Pacific 36-foot, 2-bay, covered hopper car number 75208 in a cut of cars at Idaho Falls, Idaho, on September 10, 1981. The car is part of the 75200-75299 number series. Photo by GJ Werkema. Other subject classes: freight car, covered hopper car

Northern Pacific 40.5-foot, box car number 3020 with plug and sliding doors is in a train at Idaho Falls, Idaho, on August 19, 1975. The car is part of the 3000-3399 number series. Photo by GJ Werkema. Other subject classes: freight car, steel box car

Northern Pacific 50-foot, single plug door, refrigerator car 97815 is in a train at Idaho Falls, Idaho, on August 19, 1975. The car is part of the 97800-97899 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Great Northern Gondola 72773 at Idaho Falls, Idaho, September 10, 1981, Association of American Railroads Class LG. Other subject classes: Gondola

Great Northern Covered Hopper Car 171057 at Idaho Falls, Idaho, August 19, 1975, Association of American Railroads Class LO. Other subject classes: Covered hopper car

Great Northern Boxcar 38035 at Idaho Falls, Idaho, September 10, 1981. Other subject classes: Box car

Great Northern Boxcar 319140 at Idaho Falls, Idaho, September 10, 1991. Other subject classes: Box car