2018-06-212018-06-211969-08-13http://hdl.handle.net/2152.3/9409A plaque enclosed in a certificate folder with the Presidential Seal on the outside, the plaque from the President's Dinner honoring the Apollo 11 Astronauts.Apollo 11PlaquePresident's DinnerDr. William ThorntonNeil ArmstrongMichael CollinsBuzz AldrinRichard Nixon