Railroad Archives Online
- CollectionE0437 - Jim Parker Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3004 - Railroad Passenger Cars
- 4 more...
- Item48163 - Northern Pacific Passenger Car Number 559, Wishram, Washington, 1967
- Item48164 - Northern Pacific Passenger Car Number 578, Spokane, Washington, 1969
- Item48165 - Northern Pacific Passenger Car Number 586, Joliet, Illinois, 1972
- Item48166 - Northern Pacific Passenger Car Number 1634, Pasco, Washington, 1968
- Item48167 - Northern Pacific Passenger Car Number 554, Joliet, Illinois, 1972