The William Fleisher Collection brings together 35mm photographic slides of Spokane, Portland and Seattle Railway equipment taken after the 1970 merger, builder plates for EMD diesel locomotive Class GP9 Number 151 and for ALCO diesel locomotive Class RS3 Number 67.
The Ted Pope Collection consists of copies of Great Northern, Northern Pacific, Milwaukee Road and SP&S timetables from 1908 to 1964 and photographs of Pacific Northwest railroad activities taken by Mr. Pope while a Milwaukee Road and Burlington Northern employee in the early 1970's.
The Tacoma Chapter National Railroad Historical Society Donation encompasses Burlington Northern, Great Northern and Northern Pacific timetables, other railroad documents including brochures and quarterly reports and ephemera.
The Stuart Holmquist collection includes photographs of Northern Pacific buildings, locomotives and other subjects, a Northern Pacific Black Hills timetable from 1879, copies of the Burlington Northern "Burlington Bulletin" employee magazine, various Great Northern, Burlington Northern and Burlington Northern Santa Fe materials, copies of the Union Pacific Historical Society "Streamliner" magazine, a book of SP&S track plans, a book covering the Union Terminal Company in Dallas, Texas. Various books on railroad topics and annual reports for Great Northern Railway for1890-1920 and1944
The Spokane, Portland, and Seattle Railway Authority for Expenditure (AFE) Collection consists of 10,058 paper files. The contents document construction and modifications to the railroad and nearby structures, and include business and finance records, engineering drawings, maps, and correspondence. Records range from 1908 to 1968 and include some from the Oregon Trunk Railroad.
Spokane, Portland and Seattle Railway Historical Society
The SP&S Collection encompasses 6,286 documents relating to SP&S operations and indexed by station. Documents include correspondence, maps, leases, deeds, authorization documents, operating agreements and other document types for the period between 1890 and 1987.
The Ron Sloan Collection brings together a builder's plate from Spokane, Portland and Seattle Railway Class Z-6 Number 900; a box of Spokane, Portland and Seattle Railway employee papers, a switchman's kerosene lantern; and a bundle of black and white photos of Pacific Northwest scenes.
The John Willer Collection consists of 8 mechanical drawings of Portland, Oregon area buildings of the Spokane, Portland and Seattle Railway showing and 1 mechanical drawing of Portland area buildings of the Oregon Electric Railway.
The Robert Lowry Collection is comprised of 43 photos of a variety of railroad subjects, postcards, 2 Northern Pacific car diagrams, timetables for the Burlington Northern and Chicago, Burlington and Quincy railroads, and the book Spokane, Portland & Seattle Color Guide to Freight and Passenger Equipment by Ed Austin.