Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3006 - Cabooses (Railroads)
- 6 more...
- Itemimg203 - Burlington Northern Caboose 10076 at Denver, Colorado, 1976
- Itemimg204 - Burlington Northern Caboose X155 at Denver, Colorado, 1973
- Itemimg210 - Burlington Northern Caboose 11307 at Wilson Spring, Washington, 1987
- Itemimg211 - Burlington Northern Caboose 11307 at Wilson Spring, Washington, 1987
- Itemimg214 - Burlington Northern Caboose 10927 at Eureka, Montana, 1990
- Itemimg215 - Burlington Northern Caboose 10927 at Eureka, Montana, 1990
- Itemimg951 - Burlington Northern Caboose X408 at Eureka, Montana, 1990