Don't underestimate the strength feats of the old school guys. They were some fucking strong dudes around, drug free - 600+ deadlifts and 300+ clean and press. Some odd lifts still stand today, done back in the 1920's and older.
The modern BB steroid proliferation didn't start until the late 60's. Iron Man was a quality, no bullshit BB mag under Peary Rader - real, no nonsense advice on how to get big and strong naturally.