The James Martin Collection consists of 8 published railroad books, miscellaneous railroad ephemera, 423 photographs and negatives of railroad subjects, and additional photographs and items primarily from the Great Northern Railway.
The James Fredrickson Collection is an extensive compilation of documents and photographs, primarily concerned with the Northern Pacific Railroad Company with additional coverage of other Pacific Northwest railroads. The Fredrickson Authorization for Expenditure (AFE) collection covers documents from the Northern Pacific's Tacoma and Idaho Divisions from 1900 to 1927. Many of these documents are actually Field Completion Reports (FCR).
The Jack Blanchard Collection includes issues of "Extra 2200 South", a magazine on diesel locomotive news and histories, and a Milwaukee Road postcard of Snoqualmie Pass, Washington.
The Herb Chaudiere Collection is comprised of books, photographs, motion pictures, audio tapes, and periodicals covering the Northern Pacific, Great Northern, Milwaukee Road, Union Pacific and other railroads.
The Harold Shannon Collection consists of over 300 photographs, primarily of Northern Pacific Railroad subjects. Most were taken in the mid-twentieth century.
The Hal Will Collection includes 57 photographs, principally of Great Northern Railway equipment, taken in the Seattle, Washington area between 1947 and 1956.
The Great Northern Railway Historical Society Collection consists of 16mm films and documents: Pacific Coast Railroad annual reports for 1951-1969 and Oregon California and Eastern Railroad annual reports for 1948-1969, Pacific Coast Railroad Interstate Commerce Commission annual reports for 1945-1967, Great Northern Railway - British Columbia annual reports, Great Northern Railway ledgers of California Statistics circa 1966-1969, Great Northern Railway Canadian Activity reports for various years, binders of Great Northern Railway records between 1910 and 1989.