Doonesbury by Garry Trudeau for July 27, 1976
Transcript:
Man: Here are the tracings we've obtained so far, Bernie. We've had several "hits," but attempts at photographic correlation have been persistently withstood! Lok at those readings! Some nice intrusions recorded there, right? Well, the intrusions automatically trigger the hydro-cameras. The cameras then routinely malfunction. When they don't, they take color slides of silt and bubbles! It's a good thing I've got tenure. Bernie: Doc, are you sure you're using the right film?