Boxcar 18231 and U25B 814 by Frisco.org Posted on May 31, 2019 Boxcar 18231 and U25B 814 Boxcar 18231 and U25B 814 with a Work Car in April 1975. This entry was posted in CA Collection and tagged 18231, 814, Boxcar, General Electric, Maintenance of Way, U25B, Work Car. Bookmark the permalink.