Paul K. Withers

• EMD's SW 8
• The contemporary diesel spotters guide
• Conrail motive power, 1986-1991
• Diesels of the Chicago & North Western
• Norfolk and Western Railway
• Norfolk Southern Locomotive Directory 1998-1999
• Southern
• Conrail, the final years, 1992-1997
• Diesels of the Southern Railway 1939-1982
• Emd's SW8
• Norfolk Southern Locomotive Directory 2006-2007
• Norfolk Southern, 1982-1994