To
All My Sons
For the technical information on the three-stage rocket and the Space Station, I am grateful to and have relied upon figures taken from Man Will Conquer Space Soon, a symposium published in Collier’s magazine, March 22, 1952, and subsequently published in expanded form by The Viking Press under the title Across the Space Frontier.
My thanks, too, to Arthur C. Clarke, who graciously answered several tricky questions about the Moon.
R. M.