Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- ItemWWAPC0093 - Seattle and Walla Walla Railroad steam locomotive number 1, A. A. Denny, at Seattle, Washington, circa 1878.
- ItemWWAPC0094 - Seattle and Walla Walla Railroad steam locomotive number 1, A. A. Denny, at Seattle, Washington, circa 1878.
- ItemWWAPC0096 - Columbia and Puget Sound Railroad steam locomotive number 2, Alki, at Seattle, Washington, circa 1880.
- ItemWWAPC0097 - Columbia and Puget Sound Railroad steam locomotive number 2, Alki, at Newcastle, Washington, circa 1894.
- ItemWWAPC0098 - Seattle and Walla Walla Railroad steam locomotive number 3, Geo. C. Bode, at Seattle, Washington in 1874.
- 26 more...