Keen Detective Funnies Vol. 2 (1939) comic books 1955 or before
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Published Jan 1939 by Centaur Comics.
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Published Feb 1939 by Centaur Comics.
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Published Mar 1939 by Centaur Comics.
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Published Apr 1939 by Centaur Comics.
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Published May 1939 by Centaur Comics.
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Published Jun 1939 by Centaur Comics.
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Published Jul 1939 by Centaur Comics.
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Published Aug 1939 by Centaur Comics.
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Published Sep 1939 by Centaur Comics.
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Published Oct 1939 by Centaur Comics.
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Published Nov 1939 by Centaur Comics.
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Published Dec 1939 by Centaur Comics.