17miles S Fresno reported light formation observation — May 9, 1952

It does not contain any photographs, only textual information about an unidentified flying object sighting. BRIEF SUMMARY OF SIGHTING: Color: Green body w/yellow trail Shape: Sphere w/tail Object emitted bright green flames. UNCLASSIFIED HEADQUARTERS EIGHTH AIR DEFENSE DIVISION Hamilton Field, California 25 JUN 1952 SUBJECT: Unidentified Flying Objects Reporting (Uncl) FROM: Commanding General, Western Air Defense Force, Hamilton Air Force Base, California TO: Commanding General, Air Defense Command, Ent Air Force Base, Colorado TO: Director of Intelligence Headquarters, USAF, Washington 25, D.C. 1800 DURATION: 10-15 minutes NATURE OF OBSERVATION: Unidentified Flying Object CONCLUSIONS: Unidentified SOURCE: Confidential SUMMARY: (Under certain paragraphs. List enclosures at bottom.) The following report was received by regular mail on 20 June 1952 written by (Observer), Berkeley, California on an unidentified flying object observed by himself. The lights were observed for approximately 10 minutes before disappearing. The observer, who was a civilian, reported the incident to the nearest Air Force base, and this sighting was subsequently investigated. The report indicates that the investigator was unable to determine the nature of the unidentified lights observed.