grosset & dunlap charter communications ace imprint mmpb mis-stated third printing, probably the fourth - must be at least fourth printing including the 1956 ace double mmpb;
text re-set, as revealed by the increased pagination
cover art by chris foss (signed with his f in a line-drawn box, re-used from ''earthlight'' arthur c. clarke (pan books uk p/b 1971), q.v.)
cover price 95¢
256pp. including titles, indica etc, end pp. advertising