Pencilling and inking credits per Julius Schwartz's editorial records. Inking formerly credited to Murphy Anderson and Bernard Sachs. Lettering credit from reprint in JLA Archives.
Inside front cover; published in cooperation with the National Social Welfare Assembly.
Previously appeared in DC comics cover-dated May 1959.
Snapper Carr is hit with stellaration and becomes the Joker (not the Batman villain) for this story.
This story is only 23 pages long as pages 8, 16 and 24 are only 2/3 of a page each.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).
Reprint in JLA Archives mistakenly credits the lettering to Joe Letterese.
Statement of October 1, 1965
No circulation information given.
Owners: National Periodical Publications, Inc., Estate of Harry Donenfeld, J. S. Liebowitz, P. H. Sampliner, Irwin Donenfeld, S. U. Sampliner, Sonia Iger, all at 575 Lexington Ave, New York, N.Y., 10022
Revised statement including circulation numbers appears in the August issue (#46).