Siberia (referenced in hand-drawn map)

On July 9, 1949, D.M. Ladd reported to the FBI Director that Ernest Cuneo relayed a letter Walter Winchell received from Peter Camerlon Jones of Los Angeles, describing a silver metallic object shaped like a child's top observed in the mountains near Los Angeles in August 1947, which departed silently and knocked Jones to the ground. The FBI directed the Los Angeles field office to discreetly check Jones's background and interview him, but efforts to locate him were negative. On July 21, 1949, the FBI wrote to Cuneo suggesting the original letter may have been a prank.