The FBI Vault's 24-page Majestic 12 file compiles 1988 and 1991 FBI correspondence about purported MJ-12 briefing papers alongside copies of the disputed papers. FBI personnel asked whether the material was classified, Salt Lake City initially considered it a hoax, and a later FBI note states that the document was bogus and the case should be closed. The file documents the Bureau's handling of the claim; it does not authenticate the purported 1952 briefing.