SD45s 931 and 917, and U25B 819 by Frisco.org Posted on June 19, 2018 SD45s 931 and 917, and U25B 819 SD45s 931 and 917, and U25B 819 at Springfield, Missouri on November 9, 1977 (Mike Sosalla). This entry was posted in Slides and tagged 723, 819, 823, 917, 931, 947, Electro-Motive Division, General Electric, GP35, SD45, U25B. Bookmark the permalink.