The David Sprau Collection encompasses 32 boxes of documents covering most Pacific Northwest railroads and includes operations documents, businees correspondence, engineering drawings, photographs and maps. It includes materials received from Herb Schneider, John Phillips III and David Empfield.
The Deane Motis Collection includes "White Pass and Yukon Route: Portraits in Steel and Granite" by E. Dean Motis, and other books on North American railroads.
The Delbert Jacobson Collection holds primarily engineering drawings. Subjects include Seattle's King Street Station and other Pacific Northwest facilities of both the Northern Pacific Railroad Company and the Great Northern Railway Company (U.S.). Materials cover much of the twentieth century.
The Diane Morlock Collection includes Great Northern Railway Cascade Division Timetable 104 dated 10/31/1965 and a passenger timetable Great Northern Railway dated 4/27/1969.
The Diane Rousseau Collection is comprised of 1 folder of pictures and research of the Dining and Parlor Car Number 7575/7576 the "Litchfield" and a photo album of the history of the "Litchfield".