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
- 27 more...
- 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
- Itemimg59 - Burlington Northern Diesel Locomotive 423 at Denver, Colorado, 1970
- Itemimg60 - Burlington Northern Diesel Locomotive 424 at Tacoma, Washington, undated
- Itemimg61 - Burlington Northern Diesel Locomotive 429 at Pasco, Washington, 1971
- Itemimg62 - Burlington Northern Diesel Locomotive 429 at Pasco, Washington, 1971
- Itemimg63 - Burlington Northern Diesel Locomotive 436 at Denver, Colorado, 1974
- 8 more...