Remember vaguely reading one of those letters from the Smithsonian, laughed ‘til was exhausted.
Would enjoy seeing and reading it again, if available.
Smithsonian Institute, Paleoanthropology Letter of Rejection
I believe it turned out to be a hoax but there is a real one that asked the Smithsonian how to prepare a habitat, trap and the long term care and feeding of “them”.
Sadly the person who wrote the letter failed utterly to explain what creature he was referring to.