Project 10073 Record Card — Santa Rosa, Calif., 4 Aug 52

On August 4, 1952, an unidentified aerial phenomenon was reported by Ground Observer Corps (GOC) personnel in Santa Rosa, California. The object, described as a round, silver, ball-like disk, was observed visually on three separate occasions over a two-hour period, beginning at 1315 Pacific Daylight Time. Each observation lasted approximately five minutes. The object was estimated to be at an altitude of 15,000 feet and was traveling at a speed between 50 and 70 miles per hour. Witnesses reported that the object initially moved on a zig-zag course before transitioning to a straight path heading north. No sound was reported in association with the object. The weather conditions at the time were described as very clear, with winds blowing from the southwest to the northeast at 15 miles per hour. Official investigations conducted by the 28th Air Division, specifically by 2nd Lieutenant James W. Westbrook, concluded that there was no information available to determine the identity of the object. The report notes that there were no aircraft in the area at the time of the sightings, and investigations into meteorological activity and physical evidence yielded negative results. The report was reviewed and concurred with by Captain Orville E. Bixel, Director of Intelligence. The documentation includes a project record card and an Air Intelligence Information Report (IR-38-52 W) forwarded to the Air Technical Intelligence Center at Wright-Patterson Air Force Base.