(A) Dick Briefer & Various In 1939, Montague Dexter built a rocket ship for that year's World Fair and to demonstrate that it works, he and his wife took off and flew to Mars. Unfortunately, the ship crashed as soon as it reached the red planet. He spent the next sixty one years trying to repair the ship. By that point, he and his wife were far too old to handle the rigors of space travel. But their son, Rex Dexter, was young and fit and he piloted his parent's space ship back home. Earth at the turn of the millennium was much more advanced than the world his parents left behind. Reprints Rex Dexter of Mars (1940). 9781786367440