The Lewis Arthur Dinsmore Collection is comprised of letters written when helping the survey for the Great Northern Railway in North Dakota the summer of 1893. He was west of Minot, North Dakota and moved with the work. They lived in tents and experienced everything from bad water and mosquitos to prairie fires. He loved wild flowers and seemed to have a good time. He turned 19 that summer..
The Lee Bailey Collection consists of 2 large binders of correspondence between Pacific Northwest railroad companies and Pacific Northwest railroad companies and customers on two broad subjects: shipping poultry feed (1904-1922) and shipping flour and grain (1915-1921).
The Lawrence Stuckey Collection includes materials on the Northern Pacific Railroad Brandon Branch, magazine pages, a Northern Pacific Railroad Railway Valuation Sections booklet; locomotive photosgraphs, a timetable, photographs of other railroad subjects, a reprint of "Northern Pacific Railroad Passenger Equipment III".
The Laurie Briggs and Family Collection includes Burlington Northern Railroad calendars, timetables and maps with a few Northern Pacific Railroad items, and a 1962 Great Northern Railway World's Fair poster.
The Larry Occhiello Collection consists of a photograph of the crew of the Northern Pacific Railroad Company's Northtown Shops in Minneapolis (Minn.), taken on August 14, 1937, with steam locomotive NP 1718 in the background.