JFK’s last birthday: Gifts, champagne and wandering hands on the presidential yacht 

On May 29, 1963, Kennedy and about two dozen others boarded the 104-foot Sequoia, the presidential yacht, for a dinner party cruise down the Potomac River. It was a family-and-friends-only affair. Aside from a few Secret Service agents, the roster of guests gleamed with a touch of Hollywood — actors David Niven (“Separate Tables” and “The Pink Panther”) and Peter Lawford (a Rat Packer who was married to Patricia Kennedy, the commander in chief’s sister).

Source: JFK’s last birthday: Gifts, champagne and wandering hands on the presidential yacht – The Washington Post