Project 10073 Record Card — Green Bay, Wisconsin, 11 October 1956

This document is a Project 10073 record card detailing a civilian sighting of an unidentified aerial object in Green Bay, Wisconsin, on October 11, 1956. The witness reported observing a single, round, white object, which they estimated to be the size of the moon. The object was observed for a duration of five minutes, during which it traveled in a westerly direction before disappearing by fading out of sight. The report explicitly notes that no photographs were taken and there was no radar contact associated with the event. The official conclusion recorded on the card states that the sighting was probably caused by an aircraft. However, the document also contains a handwritten note from a Senior Director, Captain, USAF, stating that the information was insufficient to draw any definitive conclusion. The record card includes administrative markings and references to the 37th ACW, indicating the military's involvement in processing the report. The document provides a clear, albeit brief, account of the sighting and the subsequent evaluation process used by the Air Force during this period.