UFOB Index Card and Incident Report — Sacramento, California, May 1955

This document consists of a UFOB Index Card and a corresponding military teletype report regarding an unidentified aerial phenomenon observed on May 29, 1955, in Sacramento, California. The witness, a civilian described as intelligent and reliable, reported seeing a single, silvery-white, circular or spherical object. The object was estimated to be the size of a penny held at arm's length and was observed moving in a straight line from south to north at an altitude of approximately 10,000 feet. The witness noted that the object's speed was significantly greater than that of a conventional jet. The observation lasted between five and ten seconds before the object faded from view. The reporting officer, Lt. Col. Donald E. Hewitt of the 3535 Air Defense Wing at Mather Air Force Base, noted that the witness also observed a flight of four reciprocating engine aircraft in the area two hours prior to the sighting. The official conclusion reached by the military was that there was insufficient data to determine the cause of the sighting. Because of the brevity of the report and the delay in its receipt at headquarters, it was determined that further investigation would be unlikely to yield significant information, and therefore no follow-up was authorized. The document also includes a summary list of other sightings reported in June 1955, which categorizes various incidents across the United States and abroad, ranging from aircraft and balloons to meteors and ground lights, illustrating the administrative process for tracking such reports during this period.