Project 10073 Record Card — Mexico, Maine, 21 December 1956

This document details the investigation of a UFO sighting reported by a civilian housewife in Mexico, Maine, on 21 December 1956. The witness reported seeing a luminous, round, bright green object, approximately the size of a washing machine cover, descend toward her children's metal swing set. She claimed the object left a four-inch mark on the swing and that she had experienced other phenomena, including TV interference and flashes of light, which she attributed to extraterrestrial activity. The report was submitted to U.S. Senator Margaret Chase Smith, who forwarded it to the Secretary of the Air Force, triggering a formal investigation by the 4602d Air Intelligence Service Squadron (AISS).

Investigators, including Major Carter O. Cooper and the local Chief of Police, conducted a site visit. They determined that the 'mark' on the swing was merely the residue of a manufacturer's decal. The investigation concluded that the sighting was likely a reflection of auto headlights or hunters' spotlights from the many windows of the witness's farmhouse. The witness was described as 'completely unreliable' and a 'firm believer in Flying Saucers,' having been influenced by literature on the subject. The official conclusion of the Air Force investigators was that the sighting was a hallucination, and the case was closed with the recommendation that no further action was required.