An anthology of short stories about the future of mankind on the moon. Stories include:- Operation Pumice, by Raymond Z. Gallun- Jetsam, by A. Bertram Chandler- Reluctant Heroes, by Frank M. Robinson- Moonwalk, by H.B. Fyfe- Keyhole, by Murray Leinster- That Moon Plaque, comments by science fiction writers.Original edition published in 1958, this copy adds additional material acknowledging that in the intervening years between the two editions man had actually landed on the moon, including a new introduction and comments by multiple leading science fiction authors of the time.