Project 10073 Record Card — Portland, Oregon, 10 September 1957

On September 10, 1957, at approximately 0815 local time, a civilian witness, identified as Mrs. F. H., observed an unusual object in the sky over Portland, Oregon. The witness, who was walking to work at the Northeast YMCA, described the object as oblong-shaped and possessing the color of an electric light viewed through an opaque white glass shade. The object was observed traveling west against a bright blue sky. During the observation, the object reportedly made a right-angle turn to the south before disappearing behind the roof of a house. The witness noted that the object appeared to dim as it moved away. The sighting was reported to the United States Air Force in a letter dated September 13, 1957. The 357th Fighter Group (Air Defense) subsequently processed the report in accordance with AFR 200-2 and forwarded it to the Air Defense Command at Ent AFB, Colorado. The official military assessment, documented on a Project 10073 record card, concluded that the object was 'Probably a/c' (aircraft). The report includes meteorological data for the time of the sighting, indicating clear weather conditions.