Northern Pacific Railroad inspection car, number B-67 on the rails at Easton, Washington, circa 1945. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, motor car, track inspection.

Northern Pacific Railroad rotary snowplow at Easton, Washington, circa 1950. A Northern Pacific rotary snowplow clears the Easton yard near the covered turntable and cinder pit. Photo by Albert Farrow, J.M. Fredrickson Collection. Other Subject Classes: rotary snow plow, maintenance of way.

Northern Pacific Railroad rotary snowplow, number 9, circa 1955, parked at an engine terminal. Built by Alco-Cooke in 1910 and converted from coal to oil burning in 1947. Photo by Jerry Hanson, J.M. Fredrickson Collection. Other Subject Classes: rotary snow plow, maintenance of way.

Northern Pacific Railroad supply car out of service at Yakima, Washington in 1981. Photo by J.M. Fredrickson. Other Subject Classes: company equipment, flat car, boom tender with house.