Doonesbury by Garry Trudeau for March 10, 1980
Transcript:
Honey: J.J! It's him. J.J: Who?... Zeke! Zeke: Hi, doll! Just got in. Pack your bags. We're going to Bermuda. J.J: Bermuda? Zeke, what are you talking about? Zeke: I finished my book on Duke. Bantam is publishing it, and I'm getting an advance of $100,000! Honey: Duke? You wrote a book on Duke? What do you say about him? Zeke: Um... I dunno. I haven't had a chance to read it yet. J.J: $100,000! It must be really good!
Impressively good, considering that in 2020 advances average between $5k and $50k for a first time author.