SD45 6686 (Frisco 938), U25B 5223 (Frisco 821), and SD45 932 by Frisco.org Posted on November 8, 2016 SD45 6686 (Frisco 938), U25B 5223 (Frisco 821), and SD45 932 SD45 6686 (Frisco 938), U25B 5223 (Frisco 821), and SD45 932 at Memphis, Tennessee in January 1981 (Lon Coone). This entry was posted in BN Patched, Donated Images and tagged 5223, 6686, 821, 932, 938, Electro-Motive Division, General Electric, SD45, U25B. Bookmark the permalink.