Today 82 years ago Igor Iwanonowitsch Sikorski went on his first free flight with this type of helicopter.
Despite being aware of the timescale, that sort of astonishes me. I still look at helicopters and think 'corrr', that's fancy/modern. (And, obviously, against all the rules of physics/god. Especially watching/hearing big ones gradually work up to mysteriously not exploding on the pad & actually taking off.) Sikorsky Archives. Good site: Sikorsky Archives | VS-300 Helicopter