The U.S. Government Actually Released A Memorandum About Searching For Yeti
The Yeti, or more commonly known as the Abominable Snowman, has been a mystery just like Bigfoot. In 1959, the U.S. Embassy in Nepal, issued a memorandum on what to do if you really encountered the Yeti in the Himalayas. Yes, this memo really does exist and you can see it here.
You can read more about the memorandum here.