Sorry, I don't have any pictures. I was never in the plant myself. Wish I had been.
How big was that biggest lathe? In Westinghouse, our largest period was a 120 inch swing about 60 foot between centers, and a 180 inch swing, about 15 foot between centers.
I'll have to look up some of the big machines on a Google.
Have you looked at the "Huge engine looks like a sewing machine" thread? Look at those engine builders and see if you can find pics of the lathe needed to turn the cranks for them.
Your message is listed as "Visitor". I don't recall seeing you post. If you are not a member, join the club.