Ace 1971 paperback (#77730- date from isfdb.com & LOCUS; copyright 1948.) Cover by Davis Meltzer (wrongly credited to Steele Savage), 221 pages, 95 cent cover price. Condition is Fine: very tight and square with flat spine; age tanning is mild and uniform (darker on insides of covers.) No stamps, marks or writing - a very clean copy (this looks unread.)