Doonesbury by Garry Trudeau for July 18, 1977
Transcript:
Duke: It's a sweet little deal, nephew! About as tasty a business opportunity as I've ever come across! 100 acres of the richest farm land in the whole San Fernando Valley! And each acre just thick with apricot trees! Zonker: Uh... Duke, I'm sure it's a great deal, but frankly, I can't see you purveying fruit! Duke: Fruit? Who said anything about fruit? The real profits are in the pits! Zonker: Pits? Oh, Duke, not laetrile... Duke: Of course not. That would be illegal.
Now they’re calling it “vitamin W”.