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
- 550 more...
- ItemWWASMR-Bus-1131 - Seattle Municipal Railway Bus 1131, Seattle, Washington, 1939
- ItemWWASMR-Bus-1807 - Seattle Municipal Railway Bus 1807, Seattle, Washington, 1937
- ItemWWASMR-TrolleyBusDemo - Seattle Municipal Railway Bus Demo, Seattle, Washington, 1937
- ItemWWASMR-40thSt-001 - Seattle Municipal Railway Track, Seattle, Washington, circa 1921
- ItemWWASMR-40thSt-002 - Seattle Municipal Railway Track, Seattle, Washington, circa 1921
- ItemWWASMR-40thSt-003 - Seattle Municipal Railway Track, Seattle, Washington, circa 1921
- ItemWWASMR-40thSt-004 - Seattle Municipal Railway Track, Seattle, Washington, 1921
- ItemWWASMR-40thSt-005 - Seattle Municipal Railway Track, Seattle, Washington, 1924
- ItemWWASMR-GrnwdBal-001 - Seattle Municipal Railway Track, Seattle, Washington, 1925
- 1568 more...