Sequel to "Prisoner in a Test Tube!" from Showcase (DC, 1956 series) #36.
Story in two parts of 5.67 pages and 6.67 pages.
At the bottom of page 6 of the previous story sequence.
On the page between page 6 and page 7 of the previous story sequence.
Published in cooperation with the National Social Welfare Assembly. Later appears in DC comics cover-dated June 1966.
Letters from Larry Brown, John Page, Joe Epstein, Robert Malisani, and Leonard Berman.
house ad for The Brave and the Bold, (DC, 1955 series) #51
house ad for Superman Annual (DC, 1960 series) #8, on sale November 21
house ad for Batman Annual (DC, 1961 series) #6, on sale November 14