Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3001 - Bridges
- 2 more...
- ItemWWAPC0714 - Burlington Northern Railroad trestle bridge at Maple Valley, Washington, circa 1971.
- ItemWWAPC0715 - Burlington Northern Railroad trestle bridge at Maple Valley, Washington, circa 1971.
- ItemWWASPSL5-007 - Burlington Northern Diesel Locomotives and Train on the Oregon Trunk Celilo Bridge at Wishram, Washington, undated
- ItemWWASPSL5-082 - Burlington Northern Railroad Bridge over the Columbia River at Wishram, Washington, undated
- ItemWWASPSL5-084 - Burlington Northern Railroad Bridge over the Columbia River at Wishram, Washington, undated