Hands up Spectator readers who can remember the American celebrities Charles Lindbergh, Babe Ruth, Al Capone, Jack Dempsey, Zane Grey, Edgar Rice Burroughs and the  adulteress and husband-killer Ruth Snyder  who all, in 1927, lit up what Bill Bryson calls ‘one hell of a summer’.

Born in America only five years later, I knew about most of these characters.