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
- 2 more...
- ItemWerkema105 - Northern Pacific box car 1160 in Albuquerque, New Mexico in 1978.
- ItemWerkema106 - Northern Pacific box car 1220 in Albuquerque, New Mexico in 1980.
- ItemWerkema107 - Northern Pacific box car 1220 in Albuquerque, New Mexico in 1980.
- ItemWerkema108 - Northern Pacific box car 1229 in Albuquerque, New Mexico in 1978.
- ItemWerkema109 - Northern Pacific box car 1702 in Albuquerque, New Mexico in 1980.
- ItemWerkema110 - Northern Pacific box car 1734 in Albuquerque, New Mexico in 1978.
- ItemWerkema111 - Northern Pacific box car 1786 in Pasco, Washington, in 1982.
- ItemWerkema112 - Northern Pacific box car 1807 in Pasco, Washington, in 1979.
- ItemWerkema113 - Northern Pacific box car 1853 in Denver, Colorado, in 1978.
- 212 more...