One Dollar Bill, Apollo 10

This United States one dollar bill is a memento of Apollo 10. In May 1969, Apollo 10 became the first human spaceflight of the Apollo program to test all apspects of a lunar landing except the actual landing. As part of the official process of certifying the flight, before human spaceflights, the National Aeronautic Association (NAA) had the astronauts or others autograph dollar bills, witnessed by the NAA official for the flight (who sometimes also signed the bill). The bills were then placed aboard the spacecraft. After the mission, recovering the identifiable bills served "as the basis for certification of the identity of the astronauts on each of the flights." Thomas Stafford, John Young, and Gene Cernan as well as two witnesses all signed this bill.

In consultation with the NAA, the NASA Johnson Space Center transferred this bill to the National Air and Space Museum in 1976.