Here's a funny thing; for all the fuss Fredric Wertham and his pals kicked up about the pernicious influence of horror comics on the children of 1950s America, they never once complained about ads like this...
(click the ad to spark up the size)
*EDIT: As per usual, I don't know what I'm talking about. A quick Google search reveals that Wertham did mention ads for whips, guns and knives in his testimony before the subcommittee on Juvenile Delinquency and Crime. Read what he had to say here.
He probably would have had a pop at this ad, too, if he'd seen it.
Scan from Tales From The Crypt #22, February 1951