SD40-2 6842 (Frisco 952) by Frisco.org Posted on July 3, 2016 SD40-2 6842 (Frisco 952) SD40-2 6842 (Frisco 952) at Lincoln, Nebraska in February 1981 (J.C. Butcher). This entry was posted in BN Patched, RT Collection and tagged 6842, 952, Electro-Motive Division, SD40-2. Bookmark the permalink.