Regulus 1 missile mail container

June 8, 1959

On June 8, 1959, the U.S. Navy fired a Regulus I missile from the USS Barbero submarine and directed it to land at the Naval Auxiliary Air Station at Mayport, Florida, near Jacksonville. This container, along with a second container, was placed inside the missile prior to the flight. Together the two held 3,000 letters.