Although the photo is from after the end date of this group, it seems like none of the photo's content is. 700 miles from the U.S. border, we can still see a radial-course GATC tank car, a longitudinal-course STC tank car (purchased secondhand by NdeM?), a postwar SP boxcar, and a B&O wagontop.
https://www.railpictures.net/photo/764785/

-Phil Lee