Northern Pacific 49.5-foot, 3-bay, covered hopper car number 76769 on a siding at Amarillo, Texas, on August 6, 1980. The car is part of the 76700-76999 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 76800 on a siding at Amarillo, Texas, on August 6, 1980. The car is part of the 76700-76999 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 76899 in a yard at Amarillo, Texas, on December 12, 1979. The car is part of the 76700-76999 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 76999 on a siding at Amarillo, Texas, on October 6, 1980. The car is part of the 76700-76999 number series. Photo by GJ Werkema. Other subject classes: freight car, covered hopper car