Project 10073 Record Card — Sighting Report, 7 September 1958

This document is a Project 10073 record card and associated correspondence regarding a UFO sighting that occurred on 7 September 1958, near Larson Air Force Base in Washington. The witness, a 40-year-old welding mechanic, reported observing an object shaped like an upside-down dipper, approximately three feet square with a one-and-a-half-foot tail. The object featured approximately five lights that outlined its shape and emitted a whirring or buzzing sound. The sighting lasted less than one minute, during which the object was observed ascending from north to south before moving instantaneously to the south. The weather conditions at the time were reported as overcast with broken clouds. The military evaluation, conducted by the Air Technical Intelligence Center, suggested that the description was similar to Navy radar planes equipped with large circular radar domes. However, the report explicitly states that the presence of such aircraft in the vicinity could not be confirmed. The investigating officer expressed skepticism regarding the witness's reliability, citing 'limited intelligence and powers of observation,' and concluded that while the object was likely a light civilian aircraft, the lack of confirmation necessitated the forwarding of the report. Handwritten annotations on the document suggest that the case could have been resolved by contacting local airports or radar units, including Larson AFB operations itself.