Beeping Cylinder (1958)
W.D. Loy of Charlotte, North Carolina first heard a loud bang, then a series of beeps coming from his front yard. He went out to investigate and found on his lawn a silvery cylinder shaped like a missile with an antenna protruding from the top. Suspecting it was some kind of Soviet satellite, similar to Sputnik, Loy sent his family into the basement to hide, then called the police.
When they arrived, they unscrewed the bolts holding the object together and found inside a beeping electric bicycle horn, as well as a note that read, "All work and no play makes Jack a dull boy. April fool!" The photo shows Officer K.K. Scott reading the note.