Published Oct 1964 by DC.
Cover pencils by Carmine Infantino, inks by Murphy Anderson. "Zero Hour for Earth!", script by Bill Finger, pencils by Sheldon Moldoff (as Bob Kane), inks by Joe Giella; A dying Interpol man informs Batman that a criminal named Karabi has plans to instigate a nuclear war. Half-page filler about the component parts of the nucleus of an atom. 2/3-page Strange Laws humor/non-fiction feature by Henry Boltinoff. Rocky and Bullwinkle star in a one-page Cheerios ad. 36 Pages, Full Color. Cover price $0.12.