Northern Pacific Railroad rotary snow plow number 9 derailed in the Tunnel number 2 cut on Stampede Pass near Martin, Washington in 1949-50. Photo by J.M. Fredrickson. 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 rotary snow plow number 10 clearing the westbound mainline at Martin, Washington in 1944. Photo by J.M. Fredrickson. Other Subject Classes: rotary snow plow, steam locomotive, maintenance of way

Northern Pacific Railroad rotary snow plow number 10 clearing the westbound mainline at Martin, Washington in February, 1945. Photo by J.M. Fredrickson. Other Subject Classes: rotary snow plow, steam locomotive, maintenance of way

Northern Pacific Railroad rotary snow plow number 9 derailed in the Tunnel number 2 cut on Stampede Pass near Martin, Washington in 1949-50. Photo by J.M. Fredrickson. Other Subject Classes: rotary snow plow, maintenance of way

Northern Pacific Railroad steam shovel, number 30 at Merriman Pit, Montana in 1944, from a postcard. Photo from J.M. Fredrickson Collection. Other Subject Classes: company equipment, steam shovel, 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.

Northern Pacific Railroad inspection car, number B-67 parked next to the foot bridge at Martin, Washington in 1939. Photo by C.L. Galbreath, J.M. Fredrickson Collection. Other Subject Classes: motor car, track inspection

Northern Pacific Railroad work train on March 16, 1971, with the Auburn wrecker, one locomotive and six cars, sits on a siding at McCarver Street at Tacoma, Washington in 1971. Four of the cars on the work train are passenger cars for the crew and supplies. The remaining cars are the Northern Pacific Industrial Brownhoist Wrecking Crane number 42 and related freight cars, a Northern Pacific drop end gondola and a Northern Pacific flat car. Visible across Dock Street is the famous Top of the Ocean restaurant. Photo by J.M. Fredrickson. Other Subject Classes: work train, wrecking crane.

Northern Pacific Railroad rotary snow plow number 45 parked at Auburn, Washington, on April 08, 1968. Photo by J.M. Fredrickson. Other Subject Classes: rotary snow plow, maintenance of way