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 3003 - Freight cars
- 13 more...
- ItemJMF06-04200.0 - Northern Pacific Railroad Box Car Number 9633 at Auburn, Washington in March, 1970.
- ItemJMF06-04201.0 - Northern Pacific Railroad Box Car Number 9999 at Renton, Washington, circa 1937.
- ItemJMF06-04201.1 - Northern Pacific Railroad Box Car Number 9999 at Renton, Washington, circa 1937.
- ItemJMF06-04202.0 - Northern Pacific Railroad Log Flat Car Number 21490 at Napavine, Washington, circa 1915.
- ItemJMF06-04203.0 - Northern Pacific Railroad Box Car Number 28481 at Tacoma, Washington in September 1969.
- ItemJMF06-04204.0 - Northern Pacific Railroad Box Car Number 31187 at Tacoma, Washington in May, 1970.
- ItemJMF06-04204.1 - Northern Pacific Railroad Box Car Number 31512 at Tacoma, Washington in May, 1970.
- ItemJMF06-04205.0 - Northern Pacific Railroad Box Car Number 37132 at Tacoma, Washington in September, 1969.
- ItemJMF06-04206.0 - Northern Pacific Railroad Box Car Number 39561 at Tacoma, Washington in September 1969.
- 7 more...