Doonesbury by Garry Trudeau for July 01, 1972
Phil: Frank, the sooner you buy, the better. Mark: Dad, I've got some news for you. Phil: Later. Frank, I tell you we've got to be bullish on this deal. Mark: Dad, I got a summer job at a computer center. Phil: What? Mark: I start work tomorrow. Phil: Frank, better unload my IBM.