U30B 861 and GP38ACs 639 and 637 by Frisco.org Posted on February 5, 2018 U30B 861 and GP38ACs 639 and 637 U30B 861 and GP38ACs 639 and 637 at Memphis, Tennessee on February 7, 1979 (G.J. Sommers). This entry was posted in RT Collection and tagged 637, 639, 861, Electro-Motive Division, General Electric, GP38AC, U30B. Bookmark the permalink.