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 3006 - Cabooses (Railroads)
- 3 more...
- ItemAMR-237 - Northern Pacific Railroad Company caboose 1209 at Butte, Montana in 1964.
- ItemAMR-189 - Northern Pacific Railroad Company caboose 1766 at Portland, Oregon in 1962.
- ItemAMR-020 - Northern Pacific Railroad Company caboose 1111 at Portland, Oregon in 1966.
- ItemAMR-032 - Northern Pacific Railroad Company caboose 1314 at Portland, Oregon in 1966.
- ItemAMR-106 - Northern Pacific Railroad Company caboose 1111 at Vancouver, Washington in 1963.