Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3012 - Street railroads
- 455 more...
- ItemWWASMR-SPO-010 - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-011 - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-012 - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-013 - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-013A - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-013B - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-014 - Seattle Municipal Railway Car 278, Seattle, Washington, 1940
- ItemWWASMR-SPO-015 - Seattle Municipal Railway Track, Seattle, Washington, 1930
- ItemWWASMR-SPO-016 - Seattle Municipal Railway Car 314 and 397, Seattle, Washington, 1940
- 1663 more...