Additionally, there are scores of print and electronic media that have made significant contributions to this website, both directly and indirectly. The Diesel Shop is made possible through their efforts. They are the ones that collect, assemble, author, and publish the important resources that drive the continued growth of the hobby and development of an ever expanding knowledge base. The list of important resources is endless; however, an attempt has been made to identify those sources that are more frequently employed. My thanks and appreciation goes out to each of them.

• A Centennial Remembrance: The American Locomotive Company (by Richard T. Steinbrenner)
• Alco FA: Running in the Shadow (by R. Craig Rutherford)
• Dawn of the Diesel Age (by John F. Kirkland)
• Diesel Builders (Volumes I, II & III)
• Diesels from Eddystone (by Gary W. and Stephen F. Dolzall)
• Diesel Spotters Guide (I, II & Contemporary)
• Erie-Builts (by David R. Sweetland)
• Fairbanks-Morse Locomotives (by Jim Boyd)
• Locomotive Magazine
• Our GM Scrapbook
• Railfan & Railroad Magazine
• The Railroad Press (TRP)
• Trains Magazine
• U-Boats (by Greg McDonnell)

• Extra 2200 South Locomotive Newsletter
• Diesel Era Magazine
• Locomotive Magazine
• Railfan & Railroad Magazine
• The Railroad Press (TRP)
• Trains Magazine

• ALCOdiesel (forum)
• Alcos International
• Alco Notes (an E-zine)
• Alco World
• Andres' GM Locomotive Serial Numbers (website)
• Canadian Railway Observations (an E-zine)
• GodFatherRails (website)
• Larry Russell's GM Export Locomotives (website)
• LocoNotes (forum)
• Railroad Pictures Net (website)
• RR Pictures Archive Net (website)