Ace Books, 1966. Mass market paperback. There were two printings of this edition; the first with cover code F-375, the second with #91501 (1969). Includes an introduction by the author, and these stories: Free Men (1966); Blowups Happen (1940); Searchlight (1962); Life-Line (1939); Solution Unsatisfactory (1941).
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Description:
Ace Books, 1966. Mass market paperback. There were two printings of this edition; the first with cover code F-375, the second with #91501 (1969). Includes an introduction by the author, and these stories: Free Men (1966); Blowups Happen (1940); Searchlight (1962); Life-Line (1939); Solution Unsatisfactory (1941). **