Project 10073 Record — Langhorne, Pennsylvania, September 1966

This document is a Project Blue Book record concerning an unidentified aerial observation reported by a civilian in Langhorne, Pennsylvania, in September 1966. The witness reported observing a single, very bright object, which they compared in size and brightness to the stars of the constellation Cassiopeia. According to the witness's notes, the object was observed at 9:26 PM on a Saturday night, reaching the treetops. The witness described the object as becoming dimmer as it moved toward the northern horizon, remaining visible even after it descended below the treeline. The witness noted there was no sound associated with the object. A sketch included in the file depicts the object's path and a separate drawing shows the object as seen through a telescope, described as a white circular object with a white ring around it. On October 4, 1966, Major Hector Quintanilla, Jr., Chief of Project Blue Book, wrote to the witness stating that the information provided in their initial letter was insufficient for a formal evaluation. The Air Force requested that the witness complete an attached FTD Form 164 to provide further details. The official conclusion recorded on the Project 10073 form is 'INSUFFICIENT DATA FOR EVALUATION'.