Doonesbury by Garry Trudeau for October 24, 1973
Transcript:
Girl: Howie, do you know who Bilie Jean King is? Boy: Sure, silly! Girl: Well, when I grow up, I'm going to be a tennis player, just like her! Boy: Me, too! Me, too! I wanna grow up to be a professional tennis player, just like Billie Jean King! joanie: Howie! Breakthrough! Boy: What? What'd I say?