U30B 861 and B30-7 866 by Frisco.org Posted on November 8, 2014 U30B 861 and B30-7 866 U30B 861 and B30-7 866 lead a train at at Tulsa, Oklahoma in May 1980 (Trackside Slides). This entry was posted in Slides and tagged 861, 866, B30-7, General Electric, U30B. Bookmark the permalink.