[kbob]

I feel compelled to mention The Laszlo Letters and its sequels. In the 1970s, comedian Don Novello (aka Father Guido Sarducci) wrote a variety of crank letters to CEOs and politicians. He got a variety of responses. He published the letters and their responses in the books. It had sort of a Borat-by-post vibe.

https://en.wikipedia.org/wiki/Don_Novello#Career