Project 10073 Record Card — Sanderson, Texas, 24 September 1957

This document details a UFO sighting report filed under Project 10073, occurring on 24 September 1957, seven miles north-northwest of Sanderson, Texas. A civilian witness reported observing a round, red object, described as being the size of a big ball, for approximately five minutes while in a car. The report includes a teletype communication from the 741st Aircraft Control and Warning Squadron (ACWRON) at Lackland Air Force Base to the 33rd Air Division and other command entities. The investigation concluded that the object was likely a weather balloon. This determination was based on a check with the U.S. Weather Bureau, which confirmed that a balloon had been released at 5:30 PM CST from the Big Spring Station. The report explicitly notes that no unusual activity was detected by radar during the time of the sighting. The documentation includes the original record card and the subsequent teletype correspondence confirming the investigation's findings, with a handwritten note concurring with the conclusion that the object was a balloon.