Northern Pacific Day/Nite coach at the Burlington passenger station at Denver, Colorado, in January 1971. Photo by GJ Werkema. Other subject classes: passenger car, coach

Northern Pacific 54-foot, flat car number 62467 loaded with heavy equipment in a yard at Albuquerque, New Mexico, on May 21, 1980. The car is part of the 62300-62494 number series. Photo by GJ Werkema. Other subject classes: freight car, flat car

Northern Pacific 54-foot, flat car number 62783 in a train at Pasco, Washington, on October 1, 1971. The car is part of the 62700-62949 number series. Photo by GJ Werkema. Other subject classes: freight car, flat car

Northern Pacific 60-foot, flat car number 66118 in a yard at Albuquerque, New Mexico, on May 25, 1978. The car is part of the 66100-66244 number series. Photo by GJ Werkema. Other subject classes: freight car, flat car

Northern Pacific 41.5-foot, gondola car number 50599 in a train at Bellingham, Washington, on July 27, 1977. The car is part of the 50500-50749 number series. Photo by GJ Werkema. Other subject classes: freight car, steel gondola car

Northern Pacific 65-foot, drop-end, gondola car number 56031 in a yard at Bellingham, Washington, on November 8, 2003. The car is part of the 56000-56024 number series. Photo by GJ Werkema. Other subject classes: freight car, steel gondola car

Northern Pacific 41.5-foot, drop-bottom, gondola car number 58801 in a yard at Albuquerque, New Mexico, on November 25, 1979. The car is part of the 58750-58999 number series. Photo by GJ Werkema. Other subject classes: freight car, steel gondola car

Northern Pacific 41.5-foot, open hopper car number 85356 in a train at Skykomish, Washington, on April 10, 1988. The car is part of the 85100-85499 number series. Photo by GJ Werkema. Other subject classes: frieght car, open hopper car, Hopper

The unloading gate detail of Northern Pacific Hart ballast car 87384 at Denver, Colorado, on September 20, 1973. The car is part of the 87000-87499 number series. Photo by GJ Werkema. Other subject classes: frieght car, open hopper car, Rodgers Ballast car

Northern Pacific 33.75-foot, open, twin hopper car number 70374 on a siding at Denver, Colorado, on August 26, 1973. The car is part of the 70200-70399 number series. Photo by GJ Werkema. Other subject classes: freight car, open hopper car