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
- 58 more...
- ItemJMF17-12814.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12815.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12816.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12817.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12818.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12820.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12821.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12822.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- ItemJMF17-12823.0 - Northern Pacific rotary snow plow number 42 at Stampede, Washington in 1972.
- 5 more...