SW1500 56 (Frisco 351) by Frisco.org Posted on May 29, 2016 SW1500 56 (Frisco 351) SW1500 56 (Frisco 351) at Springfield, Missouri on January 4, 1981 (J.H. Wilson). Posted in BN Patched, RT Collection | Tagged 351, 56, Electro-Motive Division, SW1500 | Leave a comment