Northern Pacific 49.5-foot, 3-bay, covered hopper car number 76717 on a siding 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 76717 on a siding 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 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

Southern Pacific Railroad diesel locomotive 8464 at Fort Worth, Texas, on June 21, 1978. Number 8464 is shown with Burlington Northern numbers 5924, 5807, and 7025. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.