Project Blue Book Sighting Reports and Correspondence — August-September 1966

This document is a compilation of Project Blue Book sighting reports, correspondence, and photographic analysis records from August and September 1966. The records document various civilian reports of unidentified aerial phenomena across the United States. Many of the reports involve photographic evidence, which the Foreign Technology Division (FTD) subjected to analysis. The FTD frequently concluded that photographic anomalies were the result of lens artifacts, specifically 'central refraction of the iris diaphragm,' or reflections. In cases where reports were submitted long after the sighting, the Air Force noted that a meaningful scientific investigation was impossible, often citing the late reporting as a primary obstacle. The correspondence includes letters from civilians seeking explanations for their sightings and photographs, with the Air Force providing standardized responses requesting further information or explaining the limitations of their analysis. Several reports mention the ECHO I satellite as a potential explanation for sightings. The document also includes internal FTD work orders for photographic analysis and summaries of sightings from the 1-15 September 1966 period, categorizing them as 'Insufficient Data,' 'Aircraft,' 'Satellite,' or 'UNIDENTIFIED.'