Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- 15 more...
- ItemWWASPSL3-136 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive 625, July 21, 1947
- ItemWWASPSL4-001 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive, Class Z-6, east of Home Valley, Washington, undated
- ItemWWASPSL4-002 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive, Class Z-6, east of Home Valley, Washington, undated
- ItemWWASPSL4-005 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive at Home Valley, Washington, undated
- ItemWWASPSL4-006 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive, April 2, 1910
- ItemWWASPSL4-071 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive 603 at North Dalles, Washington, July 4, 1938
- ItemWWASPSL4-111 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive 158, Washington State, undated
- ItemWWASPSL4-113 - Spokane, Portland, and Seattle (SP&S) Steam Locomotive 625, Washington State, undated
- ItemWWASPSL5-017 - Spokane, Portland, and Seattle (SP&S) Steam Locomotives 911 and 538, Wishram, Washington, undated
- 926 more...