Project 10073 Record Cards and Incident Reports — Vincennes, Indiana, September 1956

This document contains two Project 10073 record cards and associated military teletype reports regarding unidentified aerial phenomena observed near Vincennes, Indiana, in September 1956. The first incident, occurring on 14 September 1956, involved a single round object described as being the size of a large light bulb at arm's length. The witness reported the object was white and red, emitted sparks, and moved straight down for 10 to 15 seconds before disappearing in the north-northeast. The reporting officer concluded this was a meteor. The second incident occurred on 18 September 1956 and involved a silver, egg-shaped object estimated to be 50 feet in diameter. The witness, a member of the Ground Observer Corps, observed the object at an altitude of 5,000 feet for approximately five minutes as it traveled a southwest course. Following an investigation by the Air Technical Intelligence Center (ATIC) using ATIC Form 164, the military concluded that the second sighting was likely caused by an aircraft. The documentation includes detailed meteorological data for the 18 September sighting, including wind speeds at various altitudes, and provides the names and addresses of the civilian witnesses involved in the reports.