Railroad Archives Online
- CollectionD0255 - Casey Adams Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- ItemCRABND001 - Burlington Northern Diesel Locomotives 7186, 6369, 6379, 4116 at Skykomish, Washington in 1987
- ItemCRABND003 - Burlington Northern Diesel Locomotive 6335 in Wenatchee, Washington, undated
- ItemCRABND004 - Burlington Northern Diesel Locomotives 6349 and 6903 in 1987
- ItemCRABND005 - Burlington Northern Diesel Locomotives 7024, 8142, 6399, and 7502 at the Cascade Tunnel in Washington in 1987
- ItemCRABND006 - Burlington Northern Diesel Locomotives 8027, 4116, 6379, 6369, and 7186 at Skykomish, Washington in 1987
- 20 more...