First "New Look " issue, first letters page.
On-sale date from ad in Mystery in Space #91.
Published in cooperation with the National Social Welfare Assembly.
First letters section has editor Schwartz explaining the changes to Detective Comics, including the "new look" and a new back-up strip, Elongated Man. A letter from fan Tom Fagan is also included.
Spin-off from The Flash (DC, 1959 series) title.