The San Luis Obispo Railroad Museum Collection is comprised of the book "Wonderland 1905", descriptions of the Pacific Northwest written by Olin D. Wheeler and published by the Northern Pacific Railroad, and the brochure "Scenic Highlights" produced by the Northern Pacific Railroad.
The Scott Tanner Collection includes Great Northern and Northern Pacific documents from the early to mid-1900's , drawings and documents relating to the King Street Station in Seattle, Washington, a scrapbook with items from Holloway, Minnesota and an engineering drawing of the trestle at Lowell, Washington.
The Skykomish Historical Society Collection consists of the Northern Pacific's booklet "Through Wonderland" on Yellowstone National Park, a collection of photographs accumulated by Chuck Strawn, Great Northern Railway locomotive erection drawings gathered by Mike Bartenstein.
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 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 Stan Kistler Collection consists of over 500 images of Northern Pacific Railroad Company equipment during the middle decades of the 20th century and 12 Northern Pacific public timetables from the 1930's through 1957, collected by Harold Stewart.
