Quartet of GP7s by Frisco.org Posted on July 15, 2016 Quartet of GP7s Quartet of GP7s (date and location unknown). This entry was posted in FT Collection and tagged Electro-Motive Division, GP7. Bookmark the permalink.
The 1st and 4th units look like they never had steam generators.
The 2nd and 3rd units have steam generators that are still intact.
All 4 units have the exhaust stack extensions, which I believe were applied in the early 1960s.
After blowing up the image, My guess on the road numbers is:
519 611 601 585
611 and 601 had steam generators as built, 519 and 585 did not.
Paul
Note also that all four have different paint schemes.