May 29, 2020
“The SD45 demonstrator set came with the A-B pair of F-units and the test car, to show the Chicago Great Western how this new and more powerful version of the SD40 (the CGW already had at least eight of those, I recall) could pull the long freights and climb the long grades, including the one up to Winston Tunnel southeast of Dubuque.”
Chicago
February 12, 1967
Photo by Paul Enenbach
(via Chicago, 12FEB'67 | The SD45 demonstrator set came with the … | Flickr)