The astronauts : the true story of man's greatest adventure in outer space / Donald Myrus. Myrus, Donald, 1927- Project Mercury (U.S.) Juvenile literature. Astronauts United States Juvenile literature. TL793 .M9 629.1388 MYA New York, Grosset & Dunlap [1961] [1961] 1961 Text p. cm. eng United States