Report of Investigation: Aerial Phenomenon, Pullman, Washington, 13 July 1949

This report details an investigation conducted by the Office of Special Investigation (OSI) regarding a sighting of three unidentified aerial objects near Pullman, Washington, on 13 July 1949. The investigation was initiated following a newspaper report titled 'Flying Saucer over Pullman' published in the Spokesman Review. Four civilian witnesses, all laborers at either the Duthies Seed Company or the Union Pacific Railroad, provided accounts of the event. They described observing three circular-shaped discs, approximately ten feet in diameter, flying in an echelon formation toward the southeast. The objects were reported to be black on top and silver on the bottom, exhibiting an oscillating flight pattern that created a blinking effect. The witnesses noted that the objects made mechanical 90-degree turns before disappearing from view. The duration of the sighting was estimated at five to eight minutes. The weather was described as hot and humid with scattered clouds. The investigators noted that four B-29 aircraft were known to be in the vicinity at the time of the sighting, departing Spokane AFB en route to San Francisco, but they could not definitively identify the objects as these aircraft. The report concludes that positive identification of the objects was not possible. The document also includes a brief reference to a separate incident in Dayton, Ohio, on 10 July 1949, which was also being closed under Project Grudge.