Railroad Archives Online
- CollectionD0142 - Alden M. Raney Collection
- Series004 - Northern Pacific Railroad Company materials
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 24 more...
- ItemAMR-239 - Northern Pacific Railroad Company diesel locomotive 211 at Butte, Montana in 1964.
- ItemAMR-243 - Northern Pacific Railroad Company diesel locomotive 6501C at Portland, Oregon in 1962.
- ItemAMR-260 - Northern Pacific Railroad Company diesel locomotive 6003D at Portland, Oregon in 1965.
- ItemAMR-261 - Northern Pacific Railroad Company diesel locomotive 6003D at Portland, Oregon in 1965.
- ItemAMR-262 - Northern Pacific Railroad Company diesel locomotive at Portland, Oregon in 1965.