Railroad Archives Online
- ФондовиCA-W-008 - Railroad Archives Online Timetable Collection
- Серија007 - Spokane, Portland, and Seattle Railway
- Подсерија013 - Operations documents
- 002 - Timetables
- ЈединицаSPSETT001 - Portland & Seattle Railway Employee Timetable Number 1, December 15, 1907
- ЈединицаSPSETT002 - Spokane, Portland, and Seattle Railway (SP&S) System Employee Timetable Number 2, March 16, 1908
- ЈединицаSPSETT003 - Spokane, Portland, and Seattle Railway (SP&S) System Employee Timetable Number 5, November 22, 1908
- ЈединицаSPSETT004 - Spokane, Portland, and Seattle Railway (SP&S) System Employee Timetable Number 6, December 26, 1908
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