Railroad Archives Online
- ArquivoE0480 - Great Northern Railway Historical Society Miscellaneous Collection
- Série003 - Great Northern Railway Company (U.S.)
- Subsérie009 - Engineering Records
- 007 - Part fabrication drawing
- ItemALCO SPECS 278A 279A - American Locomotive Company Diesel Locomotive Type FA Specifications, Applicable to Great Northern Units 278A and 279A, undated
- ItemGM SPECS GN 271 A B - General Motors Electro-Motive Division Specifications Applicable to Great Northern Diesel Locomotive 3-Unit Set 271A-458C-271B, 1952
- ItemGST CAR CODES 1969 - Great Northern General Superintendent Of Transportation Freight Car Kind Codes, 1969
- Itemjordan spreader - Specifications for Jordan Spreader-Ditcher Type A, 1937