Correspondence regarding UFO sighting in Mexico, January 1966

This document file contains correspondence and technical analysis regarding a UFO sighting reported by Reverend Carl A. Zimmerman of Galveston, Texas. In December 1965, Reverend Zimmerman wrote to the Unidentified Flying Objects Division at Wright-Patterson Air Force Base, enclosing a 35mm slide taken by his son-in-law and daughter during their travels in Mexico approximately one month prior. The witnesses, who were traveling west of Guadalajara toward the Pacific coast, reported seeing three unidentified objects in their photographs of a river and primitive village. They claimed they had seen no aircraft and heard no noise during the time the photos were taken. Reverend Zimmerman noted that his son-in-law, a teacher at Eastern Kentucky Teachers College, had no prior interest in flying objects. The Foreign Technology Division (FTD) conducted an analysis of the slide, involving the Photo Analysis Division (TDDPA) and the Photo Processing Division (TDDPP). The official conclusion, dated January 20, 1966, stated that no discernible signature could be derived from the images. The analysts determined that the three light-toned images were likely caused by a ray of sun in a low oblique position, which created reflections on the inner surface of the camera or the lens shade. Major Hector Quintanilla, Jr., Chief of Project Blue Book, subsequently informed Reverend Zimmerman of these findings in a letter dated February 8, 1966, returning the slide and a copy of the photo analysis card.