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
- 9 more...
- ItemWerkema014 - Burlington Northern 6404 at Denver, Colorado, in 1972.
- ItemWerkema015 - Burlington Northern 6412 at the diesel shop in Denver, Colorado, in 1971..
- ItemWerkema016 - Burlington Northern 6421 at the diesel shop in Denver, Colorado, in 1972.
- ItemWerkema017 - Burlington Northern 725 at the Interbay roundhouse in Seattle, Washington, in 1971.
- ItemWerkema018 - Burlington Northern 758 at Sumas, Washington, in November 1973.
- ItemWerkema019 - Ex-NP 70000A, Burlington Northern 800 is at the roundhouse w/BN 9708, a GN blue F7A and a GN orange GP7
- ItemWerkema020 - Burlington Northern 825 at the roundhouse in Denver, Colorado, in 1973.
- ItemWerkema021 - Burlington Northern 825 at the roundhouse in Denver, Colorado, in 1973.
- ItemWerkema022 - Burlington Northern 836 at the roundhouse in Pasco, Washington, in 1970.
- 26 more...