The strongest man who ever lived, PAUL ANDERSON.
Standard clean and press: 402.5 lb (182.6 kg)
Parallel squat: 1,202 lb (545 kg), two reps
Backlift: 6,270 Lbs (weight raised slightly off tressles)
Bench Press (Raw): 627 lb (284 kg)
Bench: 627 pounds
Squat: 1206 pounds
Deadlift: 820 pounds, he pulled a massive 1000 pounds using metal hooks attached to his wrists. This assisted deadlift was witnessed by Tommy Kono
Clean and Jerk: 480 pounds, unofficial
Push Press: 600 pounds, witnessed by Bob Hise
One Arm Press: 380 pounds, 300 pounds for ten reps; this 380 pound lift was the greatest lift ever lifted overhead with one arm; both were witnessed by Paul Magistratte
Backlift: 6270 pounds, witnessed by Kara Whitfield and Maurice Payne, included in the Guinness Book of World Records
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Other Lifts Witnessed
Squat: 900 pounds for 10 reps, John Grimek was a witness to this
800 x 10 (2 sets), Pat Casey was a witness to this
900 x 1 (3 second pause) {done easily in 1956} [witnessed by Iron Man
author, but I do not have his name]
Olympic Press: 425 x 3 (just missed 3rd rep) {exhibition at 1958 dual meet with Russia, this is back when an Olympic press was strict} [Peary Radar was a witness to this]
400 x 7 {1957}