On-sale date from copyright registration.
Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Inks originally credited to George Roussos.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Story across 23 pages, but pages 14 and 23 are 1/2-pages.
Letters submitted by Jeff Pierce, Herman Soon, R. L. Thomas, Joe Arul, Lee D. Salem, and Moira L. Maynard.
Letters submitted by Vernon Dais and Bill Sheppard.
Statement of October 1, 1967
Average number of copies sold during preceding 12 months (total paid circulation): 385,800
Actual number sold for issue nearest filing date (total paid circulation): 327,700
Owner: National Periodical Publications, Inc., Estate of Harry Donenfeld, J.S. Liebowitz, P.H. Sampliner, Irwin Donenfeld, S.U. Sampliner, Sonia Mondschein, all at 575 Lexington Avenue, New York, N.Y. 10022