C/n 20248/761. This aircraft went to Delta when they bought Northeast Airlines and later to Pan Am which re-registered the aircraft to N371PA.
Every year Northeast would provide an aircraft to take the public up for a 30 minute flight around Miami at low altitude for $10, with all proceeds benefiting Variety Children's Hospital. Delta did not continue the event after they bought Northeast in 1972.
Note the Air Canada B747 with the baboon nose in the background.