Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3006 - Stockyards
- ItemStruc009018 - Spokane, Portland, and Seattle Railway Engineering Drawing, Stockyard at Wishram, Washington, 1956
- ItemStruc009019 - Spokane, Portland, and Seattle Railway Engineering Drawing, Stockyard at Wishram, Washington, 1969
- ItemStruc009158 - Spokane, Portland, and Seattle Railway Engineering Drawing, Stockyard (Oregon Electric Railway) at Albany, Oregon, 1916