Browsing through my railroad photos, I came across this one, which I have viewed many times. It's the Pennsylvania railroad's R1. I had never noticed it before but the body appears to be welded, not riveted as in other photos of R1s. All of the reading I have done on GG1s says that Raymond Lowey decided to have the GG1 body welded for aesthetic reasons, and that it was a first in car body construction.
Can someone shed some light on what I may have missed or misinterpreted ?