Doonesbury by Garry Trudeau for August 14, 1972
Transcript:
Mark: Excuse me, sir, but you look very familiar! Aren't you... Henry: Yes. Doctor Henry Kissinger. Mark: Really? Henry Kissinger, the diplomat? Henry: "Diplomat!" what're you talking about, "diplomat"? I run the country! Mark: Oh...and Richard Nixon? Henry: One of my closest advisers!
First appearance of Kissinger, I think.