Keen Detective Funnies Vol. 3 (1940) comic books 1955 or before
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Published Jan 1940 by Centaur Comics.
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Issue #2
Published Feb 1940 by Centaur Comics. -
Published Mar 1940 by Centaur Comics.
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Published Apr 1940 by Centaur Comics.
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Published May 1940 by Centaur Comics.
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Published Jun 1940 by Centaur Comics.
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Published Jul 1940 by Centaur Comics.
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Published Aug 1940 by Centaur Comics.
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Published Sep 1940 by Centaur Comics.