The John Gardner Collection is comprised of steam locomotive roster photos, electric locomotive roster photos, diesel locomotive roster photos, gas electric locomotive photos, work equipment photos, traction photos, and West photos.
The John Luecke Collection is comprised of Great Northern Railway drawings.
The contents of the John Mercer Collection were unrecorded at the time of accession.
The John Phillips III Collection is comprised of copies of "Talking It Over", a Pullman towel, a seatback cover, Annual Pass request forms, Train Service timebooks, a pad of Great Northern Railway telegram forms, and a Track Location Diagram for Minneapolis and Saint Paul, Minnesota..
The John Robinson Collection is comprised of 10 Great Northern Railway passenger train timetables and 1 system passenger train timetable.
The John Stanton Collection is comprised of 45 black and white pictures of Great Northern steam engines. Some have two pictures per print.
The contents of the John W. Palewicz Collection were unrecorded at the time of accession.
The John Wickre Collection is comprised of a Consolidated Code book and a postcard, "Route of North Coast Limited".
The Jon Bratt Collection is comprised of prints and maps.
The Ken Middleton Collection is comprised of 1916 valuation of rolling stock and work equipment.