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
- 22 more...
- Itemimg104 - Burlington Northern Diesel Locomotive 2016 at Denver, Colorado, 1970
- Itemimg105 - Burlington Northern Diesel Locomotive 2024 at Denver, Colorado, 1970
- Itemimg110 - Burlington Northern Diesel Locomotive 2539 at Denver, Colorado, 1971
- Itemimg114 - Burlington Northern Diesel Locomotive 3005 at Denver, Colorado, 1970
- Itemimg115 - Burlington Northern Diesel Locomotive 3005 at Denver, Colorado, 1970
- Itemimg32 - Burlington Northern Diesel Locomotive 327 at Denver, Colorado, 1972
- Itemimg55 - Burlington Northern Diesel Locomotive 403 at Denver, Colorado, 1971
- Itemimg56 - Burlington Northern Diesel Locomotive 403 at Denver, Colorado, 1971
- Itemimg58 - Burlington Northern Diesel Locomotive 418, 1973
- 13 more...