Huge arms and quads
Goes to say a lot, that back then, good proportions would entail a similar measurement of upper leg and waist, like a 29/30" quad and a 31/32" waist. That's what guys aimed for. Keeping a tight waist and developing quads as close to waist measurement as possible
Nowdays we have 32" quads and 34" + waists. Not quite the same goal