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 3002 - Diesel Locomotives
- ItemWerkema001 - Burlington Northern 592 waits on a service track at St. Paul, Minnesota in 1971.
- ItemWerkema003 - Burlington Northern 187 waits on the diesel shop ready track in Auburn, Washington, in 1970.
- ItemWerkema006 - Burlington Northern 1906 at the Saint Cloud, Minnesota, freighthouse in 1978.
- ItemWerkema008 - Burlington Northern 5613 parked at Pasco, Washington, roundhouse in 1970.
- ItemWerkema009 - Burlington Northern 5617 at diesel shop in Denver, Colorado, in 1970.
- ItemWerkema010 - Burlington Northern 5617 at diesel shop in Denver, Colorado, in 1970.
- ItemWerkema011 - Burlington Northern 5619 parked at the diesel shop in Denver, Colorado, in 1970.
- 37 more...