After EMD’s SD50’s developed a reputation for being trouble-prone, the builder quickly introduced the improved SD60. Four demonstrator units were sent out on tour, and they spent time on the B&O, who, along with fellow Chessie System road C&O, had invested heavily in the SD50. Here, two of the SD60 demos wait for a block while three B&O SD50’s running light pass them at Newburg, West Virginia.
