Project 10073 Record Card — Sturgeon Bay, Wisconsin, 24 May 1957

On 24 May 1957, at 1405Z, a civilian witness in Sturgeon Bay, Wisconsin, observed a single, shiny, oval-shaped object described as being the size of a football. The object was observed for a duration of five minutes, during which it traveled in a straight line due west. The weather conditions at the time were reported as clear and sunny, with visibility exceeding 15 miles. The sighting was documented on a Project 10073 record card and subsequently transmitted via teletype to the Air Technical Intelligence Center at Wright-Patterson Air Force Base, Ohio, and other military commands. The official conclusion reached by the evaluating authorities was that the sighting was likely caused by an aircraft. The report notes that the favorable weather conditions and the duration of the observation suggested that if the object's range had been small, identification would have been highly probable. The witness, identified as a Mrs. [illegible], was one of a party who observed the object, and it is suggested that one individual may have accidentally brought the object to the attention of the others.