Fifty years ago today, Gus Grissom and John Young opened the door on America's Gemini space program, ushering in the first two-manned crew mission. Gemini was an important milestone in the US march toward landing on the moon -- testing out important aspects of space flight from longer duration space flight effects on humans, to docking, rendezvous, and EVA's (or "space walks"). Taken aboard the flight on behalf of the ground crew, the historic two dollar bills that flew are also part of history as one of the greatest "gotchas" of the Gemini program. Read about it more in the $2 Dollar Bill Gallery entry for Gemini 3.
A $2 bill flown on the historic flight of Gemini 3 on March 23, 1965.