GP7s 502 and 500, and Caboose 1147 by Frisco.org Posted on June 1, 2015 GP7s 502 and 500, and Caboose 1147 GP7s 502 and 500, and Caboose 1147 at Clinton, Oklahoma on September 30, 1972. This entry was posted in RT Collection and tagged 1147, 500, 502, Caboose, Electro-Motive Division, GP7. Bookmark the permalink.