The photo was taken in Saltillo, Coahuila, on February 23, 1964. Lead helper unit NdeM 6403 was a DR-12-8-1500/2 and has been added ahead of two NdeM RSD12's to assist the train in the mountains. A subsequent photograph of this train appears on page 52 of NdeM in Color by Matthew J. Herson (Scotch Plains, NJ: Morning Sun Books, Inc., 2000). |