Legs
I watched this leg training video all the way through last night
It's interesting to see watch how he performs each movement.
In part of the video he's doing single leg curls using a leg extension machine and his form is so precise.
You can see that he's time the rest intervals. Also, at ~ 23:30 mark he talks about how he varies his training from light to heavy and a bit about his diet and other stuff like having to "prove" himself in the US even after winning Mr. America and the Universe. This is really a great blast from the past
I noticed that he did light good morning exercise for his hams but I don't think I've ever seen him doing RDL (not sure they even called them that back then) or SLDL for hams