SD45 6657 (Frisco 907) by Frisco.org Posted on July 15, 2016 SD45 6657 (Frisco 907) SD45 6657 (Frisco 907) at Cicero, Illinois on March 27, 1981 (J.C. Herold). This entry was posted in BN Patched, RT Collection and tagged 6657, 907, Electro-Motive Division, SD45. Bookmark the permalink.