Northern Pacific 50-foot, single plug door, refrigerator car 97552 is in a yard at Albuquerque, New Mexico, on May 30, 1980. The car is part of the 97500-97549 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific 50-foot, single plug door, refrigerator car 97629 is in a yard at Albuquerque, New Mexico, on February 19, 1979. The car is part of the 97600-97692 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific 50-foot, single plug door, refrigerator car 97638 is in a yard at Albuquerque, New Mexico, on December 20, 1978. The car is part of the 97600-97692 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific 50-foot, single plug door, refrigerator car 97638 is in a train at Albuquerque, New Mexico, on August 15, 1990. The car is part of the 97600-97692 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific 50-foot, single plug door, refrigerator car 97642 is in a yard at Albuquerque, New Mexico, on September 29, 1980. The car is part of the 97600-97692 number series. Photo by GJ Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific 50-foot, single plug door, refrigerator car 97727 is in a train at Belen, New Mexico, on May 22, 1994. The car is part of the 97700-97799 number series. Photo by Evan Werkema. Other subject classes: freight car, refrigerator car

Northern Pacific box car 1160 being unloaded in a yard in Albuquerque, New Mexico on January 7, 1978. Box car NP 1160 was built by the NP Car Shops in Brainerd, Minnesota in 1950 as part of the 31000-31499 50-foot box car series. In 1955, NP 1160 was one of 150 cars that had Evans DF Loader Systems installed, given a green with white strip paint scheme, and renumbered to 1100-1249. Photo by GJ Werkema. Other subject classes: freight car, steel box car

Northern Pacific box car 1220 on a siding in Albuquerque, New Mexico on April 27, 1980. Box car NP 1220 was built by the NP Car Shops in Brainerd, Minnesota in 1950 as part of the 31000-31499 50-foot box car series. In 1955, NP 1220 was one of 150 cars that had Evans DF Loader Systems installed, given a green with white strip paint scheme, and renumbered to 1100-1249. Photo by GJ Werkema. Other subject classes: freight car, steel box car

Northern Pacific box car 1220 on a siding in Albuquerque, New Mexico on April 27, 1980. Box car NP 1220 was built by the NP Car Shops in Brainerd, Minnesota in 1950 as part of the 31000-31499 50-foot box car series. In 1955, NP 1220 was one of 150 cars that had Evans DF Loader Systems installed, given a green with white strip paint scheme, and renumbered to 1100-1249. Photo by GJ Werkema. Other subject classes: freight car, steel box car

Northern Pacific box car 1229 with a partially open door in a yard in Albuquerque, New Mexico on May 25, 1978. Box car NP 1229 was built by the NP Car Shops in Brainerd, Minnesota in 1950 as part of the 31000-31499 50-foot box car series. In 1955, NP 1229 was one of 150 cars that had Evans DF Loader Systems installed, given a green with white strip paint scheme, and renumbered to 1100-1249. Photo by GJ Werkema. Other subject classes: freight car, steel box car