A train crew member walks the top of a train between Easton and Martin, Washington, circa 1917. Note helper locomotive pushing behind the caboose. Photo by Ralph Parsons, J.M. Fredrickson collection. Other Subject Classes: freight train, steam locomotive, railroad crew.

A train crew member walks the top of a train between Easton and Martin, Washington, circa 1917. Note helper locomotive pushing behind the caboose. Photo by Ralph Parsons, J.M. Fredrickson collection. Other Subject Classes: freight train, steam locomotive, railroad crew.

Northern Pacific steam locomotive 2196 at South Tacoma, Washington, on July 17, 1934. The remains of Number 2196, a class Q-4 built by Baldwin in 1909, is loaded on flat car number 65162 at South Tacoma. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, scrapping yard

Northern Pacific mechanical refrigerator car NPM 496 in a train at an unknown location on May 16, 1971. The car is part of the 450-499 number series. Photo by William Eley in the GJ Werkema collection. Other subject classes: freight car, mechanical-refrigerator car

Northern Pacific Railroad refrigerator car, number 94372 at Tacoma, Washington, in September 1969. Car 94372, a 42-foot, 3-inch, 80000 lb. capacity ice reefer. Photo by J.M. Fredrickson. Other Subject Classes: ice refrigerator car.

Northern Pacific Railroad log flat car, number 69318 with a bearden at unknown location, circa 1925. Postcard copy showing novelty carved log with live bear and men. Photo from J.M. Fredrickson Collection. Other Subject Classes: flat car.

Northern Pacific Railroad log flatcar, number 21490 at Napavine, Washington, circa 1915. Double load of large timbers with Somerville Brothers crew. Photo by D.P. Hadley, J.M. Fredrickson Collection. Other Subject Classes: flat car.

Northern Pacific Railroad log flat car, number 122162 at Tacoma, Washington, in November 1974. Car 122162, a 42-foot, 6-inch, 80000 lb. capacity log flat car. Converted from series 10000-10999 box car in 1964. Photo by J.M. Fredrickson. Other Subject Classes: flat car.

Northern Pacific Railroad log flat car, number 121178 at Auburn, Washington, on August 8, 1967. Car 121178, a 43-foot, 1-inch, 80000 lb. capacity log flat car with log load from Lester. Converted from series 90000-90999 reefers In 1952. Photo by J.M. Fredrickson. Other Subject Classes: flat car.

Northern Pacific Railroad gondola car, number 118749 at Tacoma, Washington, in September 1969. Car 118749, a wood chip, 43-foot, 8-inch, 100000 lb. capacity gondola, converted in 1959 from series 54000-54799. Photo by J.M. Fredrickson. Other Subject Classes: gondola car.