Project 10073 Record Card — Incident #73, Boston, Massachusetts, 4 August 1947

This document details a sighting incident (Incident #73) that occurred on 4 August 1947 near Boston, Massachusetts. A civilian pilot, identified as a graduate of the Aviation Cadet Flying School, reported observing two elliptical objects while in flight. The objects were described as being approximately 15 feet long and two to three feet in depth, with a deep gold color and blunt ends. The witness reported that the objects were traveling at an estimated speed of 150 miles per hour at an altitude of 7,000 feet, moving in an easterly direction. The observation lasted for approximately 30 seconds. The witness noted that there was no evidence of gaseous dissipation or exhaust trails. The weather conditions at the time were reported as 5/10 scattered clouds with tops at 10,000 feet. Following the report, the incident was evaluated by the Air Technical Intelligence Center (ATIC) under Project 10073 and later referenced in the Project Grudge Report. The official assessment concluded that the sighting was not astronomical in nature. Instead, investigators suggested that the objects were likely a highly distorted reflection of the sun off a balloon or an aircraft, noting that the 'deep gold' color described by the witness supported this interpretation. The document includes a Project 10073 record card, a formal incident summary, and an index page showing the classification of various incidents by Dr. Hynek, where Incident #73 is categorized under evidence suggesting no astronomical explanation.