GP7s 532, 583 and Caboose 1126 by Frisco.org Posted on May 28, 2015 GP7s 532, 583 and Caboose 1126 GP7s 532, 583 and Caboose 1126 at Cuba, Missouri on September 31, 1972. This entry was posted in Slides and tagged 1126, 532, 583, Caboose, Electro-Motive Division, GP7, Yard. Bookmark the permalink.