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
- 26 more...
- ItemWerkema129 - Northern Pacific boxcar 4402 at Albuquerque, New Mexico, in 1978.
- ItemWerkema130 - Northern Pacific box car number 5069 at Abo Canyon, New Mexico, in 1982.
- ItemWerkema131 - Northern Pacific box car 5211 at Boulder, Colorado, in 1965.
- ItemWerkema132 - Northern Pacific box car 5282 at Albuquerque, New Mexico, in 1978.
- ItemWerkema133 - Northern Pacific box car number 5332 at Albuquerque, New Mexico, in 1982.
- ItemWerkema134 - Northern Pacific box car number 5386 at Albuquerque, New Mexico, in 1979.
- ItemWerkema135 - Northern Pacific box car number 5410 at Albuquerque, New Mexico, in 1980.
- ItemWerkema136 - Northern Pacific box car number 5675 at Albuquerque, New Mexico, in 1978.
- ItemWerkema137 - Northern Pacific box car 6042 at Denver, Colorado, in 1982.
- 188 more...