Railroad Archives Online
- CollectionD0255 - Casey Adams Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3006 - Cabooses (Railroads)
- ItemCRABND002 - Burlington Northern Caboose 107234 at Tunnel 13 "Chumstick" in 1986