Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3005 - Maintenance of Way cars
- 16 more...
- ItemJMF08-05412.0 - Northern Pacific Railroad Rotary Snow Plow Number 10 at Auburn, Washington in May 1968.
- ItemJMF08-05463.0 - Northern Pacific Railroad Rotary Snow Plow Number 9 at Martin, Washington in 1949-50.
- ItemJMF08-05464.0 - Northern Pacific Railroad Wrecker, Number 17 at South Bend, Washington, circa 1910.
- ItemJMF08-05465.0 - Northern Pacific Railroad Inspection Car Number B-67 at Martin, Washington in 1939.
- ItemJMF08-05466.0 - Northern Pacific Railroad Inspection Car at Tacoma, Washington in 1915.
- ItemJMF08-05467.0 - Northern Pacific Railroad Work Train at Tacoma, Washington in March, 1971.
- ItemJMF08-05468.0 - Northern Pacific Railroad Rotary Snowplow Number 10 at Martin, Washington in 1944.
- ItemJMF08-05468.1 - Northern Pacific Railroad Rotary Snow Plow Number 10 at Upham, Washington in January, 1943.
- ItemJMF08-05469.0 - Northern Pacific Railroad Rotary Snow Plow Number 10 at Martin, Washington in February 1945.
- 47 more...