DC Comic Ad Oct 1966 (Comic would have been on newsstands July 1966)
DC Comic ad Sept 1967 (On Newsstands June 1967)
DC Comic Ad June 1967 (On newsstands March 1967)
DC Comic Ad June 1967 on newsstands March of that year.
What I find interesting on this one Paul is how previously kids needed to be as 'fit' or as 'tough' as a Super-Hero or Sports star. In the 1970s similar ads gave young men the chance to be as tough as a 'Kung Fu Master' but during the latter part of the 1960s with the Space Race in full swing Astronauts were perceived as the pinnacle of strength, fitness, endurance and bravery. Jim.