John Lennon was a tough Liverpool teenager with a well-earned reputation—a rocker with a volatile streak—when he first encountered Paul McCartney. It was a summer day in 1957. John’s skiffle ...

His new book, “John & Paul ... the summer of 1957 at a garden party in the Liverpool suburb of Woolton, where 17-year-old Lennon was performing with his skiffle band the Quarrymen. McCartney ...