Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, September 30, 1962.
Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, December 1, 1959.
Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, July 14, 1957.
Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, January 18, 1953.
Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, February 26, 1952.
Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, May 20, 1951.
Spokane, Portland, and Seattle Railway (SP&S) System Special Instructions, November 21, 1937.
Spokane, Portland, and Seattle Railway (SP&S) Public Timetable, September 8, 1927.
Spokane, Portland, and Seattle Railway (SP&S) Public Timetable, March 1, 1937.
Spokane, Portland, and Seattle Railway (SP&S) Public Timetable, June 1, 1944.