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 3003 - Freight Cars
- 30 more...
- Item48081 - Northern Pacific Freight Car Number 76332, Portland, Oregon, 1968
- Item48082 - Northern Pacific Freight Car Number 76494, Pasco, Washington, 1969
- Item48083 - Northern Pacific Freight Car Number 817, Meadville, Pennsylvania, November 1966
- Item48108 - Northern Pacific Freight Car Number 898, Ellensburg, Washington, 1967
- Item48109 - Northern Pacific Freight Car Number 941, Galion, Ohio, 1967
- Item48110 - Northern Pacific Freight Car Number 94058, Sprague, Washington, 1967
- Item48132 - Northern Pacific Freight Car Number 705092, Joliet, Illinois, 1972
- Item48133 - Western Fruit Express (WFEX)/Northern Pacific Freight Car Number 705227, Pacific Junction, Iowa, 1973