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 3003 - Maintenance Facilities
- 10 more...
- ItemWWASPSL1-063 - Burlington Northern (former Spokane, Portland, and Seattle) Hoyt Street Roundhouse, Portland, Oregon, undated
- ItemWWASPSL1-064 - Burlington Northern (former Spokane, Portland, and Seattle) Hoyt Street Roundhouse, Portland, Oregon, undated
- ItemWWASPSL1-065 - Burlington Northern (former Spokane, Portland, and Seattle) Hoyt Street Roundhouse, Portland, Oregon, undated
- ItemWWASPSL3-079 - Burlington Northern (BN) Roundhouse at Vancouver, Washington, December 1970
- ItemWWASPSL3-080 - Burlington Northern (BN) Roundhouse at Vancouver, Washington, December 1970
- ItemWWASPSL3-084 - Burlington Northern (BN) Roundhouse at Vancouver, Washington, December 1970
- ItemWWASPSL3-085 - Burlington Northern (BN) Roundhouse at Vancouver, Washington, December 1970
- ItemWWASPSL3-091 - Burlington Northern (BN) Roundhouse at Vancouver, Washington, December 1970