Sometimes I need to remind myself that Bill Finger, uncredited co-creator and original writer of Batman, was of my grandparents' generation.
His still-compelling contributions to Batman can make him seem contemporary, but he did not listen to rock and roll. He was not soapboxing The Feminine Mystique. He did not have Flower Power. And so on.
You can catch glimpses of this divide in his early Batman scripts. Here's an especially funny gem (from the debut story of the character who became Catwoman):
The Superman of the period had his own share of corkers:
Since then, I do believe both Superman and Batman have read The Feminine Mystique.