Doonesbury by Garry Trudeau for June 28, 1972
Zonker: You getting a job this summer? Mark: Yup. I'm gonna be a computer operator. Zonker: What!? Mike: A computer operator. I got the idea from this here matchbook cover. Zonker: You're kidding! Let's see! Mark: See? Right here - "earn $7,000, impress your friends..." Zonker: "Meet girls!" Mark: Can't beat it, son!