GP7 593, GP38AC 662 and GP38-2 667 by Frisco.org Posted on April 8, 2017 GP7 593, GP38AC 662 and GP38-2 667 GP7 593, GP38AC 662 and GP38-2 667 at Fort Smith, Arkansas on March 17, 1975. This entry was posted in Slides and tagged 593, 662, 667, Electro-Motive Division, GP38-2, GP38AC, GP7. Bookmark the permalink.