Joseph P. Kennedy, left, U.S. Ambassador to Great Britain, stands with his 20 year old son, John F. Kennedy, in New York, January 5, 1938

This is one of those moments where, if you could freeze time, you’d see a kind of fork in the American timeline quietly forming beneath the polished shoes and pressed coats.
Joseph P. Kennedy Sr.—sharp, ambitious, and already calculating three moves ahead—stands next to his 20-year-old son, John. The photograph is still. But history is anything but.











