Project 10073 Record Card — Westchester, New York, 17 December 1957

This document consists of a Project 10073 record card and associated military communications regarding an unidentified aerial sighting reported on December 17, 1957, in Westchester, New York. A civilian witness reported observing a single object described as being the size of a 'good sized balloon' with a shape resembling a bowl on both the top and bottom. The object was noted to be silver in color and was observed for approximately one and a half minutes as it traveled in a straight line before flying out of sight. The military evaluation of the report was highly critical, with the Eastern Air Defense Force (EADF) noting that the report was of 'very poor' quality. The primary issue cited by investigators was the complete absence of critical data points, specifically elevation, azimuth, and wind information. Because these essential elements were missing, the military concluded that the report could not be evaluated or identified. The documentation includes the original record card, which categorizes the sighting as having 'insufficient data for evaluation,' and subsequent military cable traffic that confirms the lack of necessary information to conduct a formal assessment of the phenomenon.