Here's a really interesting public service announcement from 1966, promoting equal pay for Women. Starring Yvonne Craig as Batgirl.
BATMAN: “Quick Batgirl, untie us before it’s too late!”
BATGIRL: “It’s already too late; I’ve worked for you a long time and I’m paid less than Robin. Same job, same employer, means equal pay for men and women.”
ROBIN: “Holy act of Congress!”