American Smelting and Refining Company (ASARCO) ore hopper car dumping slag from special cars into the water of Commencement Bay on their electrified narrow-gauge line at Tacoma, Washington, circa 1970. Photo by J.M. Fredrickson. Other Subject Classes: ore hopper car.

American Smelting and Refining Company (ASARCO) ore hopper car dumping slag from special cars on their electrified narrow-gauge line into the water of Commencement Bay at Tacoma, Washington, circa 1970. Photo by J.M. Fredrickson. Other Subject Classes: ore hopper car.

Burlington Northern gondola car interior at Tacoma, Washington in November 1974. Photo by J.M. Fredrickson. Other Subject Classes: gondola car.

Burlington Northern gondola car interior at Tacoma, Washington in November 1974. Photo by J.M. Fredrickson. Other Subject Classes: gondola car.

Chicago, Burlington & Quincy Railroad box car number 39561 at Tacoma, Washington in 1978. The car is a class XM boxcar. Photo by J.M. Fredrickson. Other Subject Classes: box car.

Northern Pacific 6052A leads the second section of freight train number 679 with high clearance Boeing parts cars down the South Tacoma hill and across Pacific Avenue near 15th Avenue in Tacoma, Washington, on March 10, 1969. The train was routed over the Prairie Line because of a low clearance bridge over the mainline near the Tacoma Union Depot. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, grade crossing.

Northern Pacific Railroad box car, number 119097 at Tacoma, Washington, in September 1969. Car 119097, a wood single sheath, 51-foot, 7-inch, 100000 lb. capacity box car, converted from series 30000 box cars. Photo by J.M. Fredrickson. Other Subject Classes: box car.

Northern Pacific Railroad red box car, number 28481 at Tacoma, Washington, in September 1969. Car 28481, a wood single sheath, 41-foot, 9-inch 110000 lb. capacity box car with 3-foot monad. Photo by J.M. Fredrickson. Other Subject Classes: box car.

Northern Pacific Railroad "Share in Freedom" box car, number 31187 at Tacoma, Washington, on May 25, 1970. Car 31187, a steel, single door, 51-foot, 11-inch 110000 lb. capacity box car. Photo by J.M. Fredrickson. Other Subject Classes: box car.

Northern Pacific Railroad "Share in Freedom" box car, number 31512 at Tacoma, Washington, on May 25, 1970. Car 31512, a steel, single door, 51-foot, 11-inch, 110000 lb. capacity box car. Photo by J.M. Fredrickson. Other Subject Classes: box car.