Northern Pacific 50-foot, single plug door, insulated refrigerator car 96091 is in a siding at Plainview, Texas, on September 2, 1985. The car is part of the 96000-96199 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific 50-foot, single plug door, insulated refrigerator car 96120 is in a yard at Plainview, Texas, on September 2, 1985. The car is part of the 96000-96199 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

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

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 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 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 57.25-foot, 3-bay, covered hopper car number 76404 in a yard at Amarillo, Texas, on December 12, 1979. The car is part of the 76400-76499 number series. Photo by GJ Werkema. Other subject classes: freight car, covered hopper car

Northern Pacific 57.25-foot, 3-bay, covered hopper car number 76481 in a siding at Plainview, Texas, on September 2, 1985. The car is part of the 76400-76499 number series. Photo by GJ Werkema. Other subject classes: freight car, covered hopper car