Back in 1932, 14-year-old Charles Highfield was promoted by his father as being the strongest boy in Great Britain. In the first picture, that's the father standing on his son's neck. The Coventry Telegraph has a bit more info about Charles's brief career as a strongman.
The YouTube user who goes by the handle "Mr. Teenagedreams" has nearly 2000 rare TEEN AND WHITE DOO-WOP videos up at his channel. Some of them are delightfully weird and demented, but all are utterly captivating glimpses of a strange and remote, now vanished era.