Anybody know if Doonesbury's Zonker ever appeared as a caddy?

My daughter told me she has a strong memory of a Doonesbury strip where Zonker appears as a caddy, wearing the outfit of a classic old time golfer with one of those golf caps, wearing the classic plaid "bloomers", all that schtick. Whatever the scene was, the outfit was crucial to it. She claims that she learned the golfing term "shank" in that strip, and won a Trivial Pursuit game with her correct answer.

This is getting to be a silly question, but I can't help it - I've been googling around to see if I could find any such strips, and I just realized that the appropriate Reddit might have someone with that little gem in their pocket.

Anyone? Yoo-hoo! . . .

And thanks

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