Here's an advertisement from Country Gentleman, February 1948. The cartoonist was Hank Ketcham (1920-2001), later of Dennis the Menace fame (or infamy, depending on what you think of Dennis the Menace). Reading is definitely good for you, and there's nothing wrong with reading horror tales. Reading horror tales at 3 o'clock in the morning might not be good for you however, especially if you have to get up at six.