Astronauts, ground support crews, and even a few cosmonauts, have sometimes carried or sent U.S. $2 bills into the deep, black void of space during many historic missions that span manned spaceflight history. They took or sent these symbols of home as mementos, good luck charms, or simply favors for family or friends. For the astronauts, some have even suggested they took the bills in homage to the fighter pilot tradition of the "short snorter." Whatever the reason, they have made Thomas Jefferson a sort of honorary, accidental astronaut of manned spaceflight history. What you are about to experience in our $2 Bill Gallery is the world's largest collection of space flown U.S. $2 bills, spanning the entire history of U.S. manned space flight.