On-sale date from copyright registration.
Story in two parts of 7.67 and 4.67 pages.
On the page immediately preceding page 9 of the previous story sequence.
Script previously credited to Gardner Fox. The reprint in DC Special (DC, 1968 series) #13 (July-August 1971) credits John Broome, which is supported by Julius Schwartz's editorial records, provided by DC Comics.