Project 10073 Record Card — Near Waupun, Wisconsin, 19 July 1957

This document consists of a Project 10073 record card and associated teletype communications regarding an unidentified aerial phenomenon reported on 19 July 1957 near Waupun, Wisconsin. The primary witness, A/1C Faustino Negrete of the GOC Filter Center, reported observing a small, white, oval-shaped object at an elevation of 40 degrees above the horizon. The object was described as having no visible tail or exhaust and was observed for a duration of 12 seconds before disappearing to the north. The report notes that a jet aircraft was circling in the area at the time of the sighting. Official military evaluation of the incident, conducted by the Air Technical Intelligence Center, initially considered the possibility of a meteor sighting. However, the report explicitly states that the daylight timing of the event and the lack of sufficient data made a definitive conclusion impossible, ultimately categorizing the incident as having insufficient data for evaluation. Handwritten annotations on the teletype copies suggest that military personnel reviewing the report were skeptical of the meteor explanation, citing the object's velocity as being consistent with a jet aircraft. The documentation includes the original teletype message sent from the 676th ACW Squadron at Antigo, Wisconsin, to the 37th Air Division, Air Defense Command, and the Air Technical Intelligence Center at Wright-Patterson Air Force Base, confirming the administrative handling of the report under the UFOB designation.