Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- 41 more...
- ItemWerkema144 - Northern Pacific box car 8187 at Albuquerque, New Mexico, in 1978.
- ItemWerkema145 - Northern Pacific box car 8324 at Pasco, Washington, in 1981.
- ItemWerkema146 - Northern Pacific box car 8500 at Albuquerque, New Mexico, in 1978.
- ItemWerkema147 - Northern Pacific box car 8541at Albuquerque, New Mexico in 1979.
- ItemWerkema148 - Northern Pacific box car 8665 at Longmont, Colorado, in 1978.
- ItemWerkema149 - Northern Pacific box car 8836 at Albuquerque, New Mexico, in 1978.
- ItemWerkema150 - Northern Pacific box car 8876 at Albuquerque, New Mexico, in 1978.
- ItemWerkema151 - Northern Pacific box car 8876 at Albuquerque, New Mexico, in 1978.
- ItemWerkema152 - Northern Pacific box car 8969 at Albuquerque, New Mexico, in 1978.
- 173 more...