Below is one of the most well-known FBI documents associated with UFOs. It’s known as the Hoover-Tolson (or, Ladd-Hoover) memo and is dated July 15, 1947. The chronological proximity to the Roswell case is, of course, what makes it famous. UFO researchers say it’s proof that the government retrieved a flying saucer from Roswell.
It isn’t. First, what some researchers interpret as “Sw” in Hoover’s handwriting isn’t “Sw” (for “Southwest”; i.e., New Mexico). It’s “La” for “Louisiana.” The disk also isn’t what you may have been led to think. Check out this link for what’s really going on.