The Dr. Leon Davidson UFO Transmitter Investigation - CIA Correspondence

This case represents a fascinating intersection of civilian UFO research and CIA intelligence operations during the height of 1950s flying saucer investigations. Dr. Leon Davidson, a prominent UFO researcher and author, published a series of articles titled "The Air Force and the Saucers," with Part Three specifically focusing on CIA involvement in UFO investigations. The declassified CIA memorandum dated July 11, 1958 (document C05515652) reveals internal agency communications regarding Davidson's publication and his direct contact with CIA personnel in Chicago. The core of Davidson's investigation involved what he claimed were mysterious radio transmissions potentially connected to UFO phenomena. He approached the CIA's Chicago office seeking assistance in obtaining code translations and identification of unknown transmitters. A CIA officer met with Davidson in what the researcher later described as a "sound-proofed conference room," though the CIA memo clarifies this was simply a convenient first-floor conference room in the local courthouse. The agency officer promised to investigate Davidson's transmitter codes and provide a response within a week, representing rare direct cooperation between a civilian UFO researcher and intelligence personnel during this period. The CIA's internal response reveals significant concern about Davidson's forthcoming publications. The memo explicitly addresses Davidson's disclosure of the Chicago CIA office location and his plans to reference CIA letterhead in his magazine articles. Agency personnel advised Davidson against using CIA letterhead without prior authorization from Washington authorities, and the memo dismissively characterizes Davidson's dramatic presentation of the "secret" Chicago meeting as "sheer drama aimed at magazine story appeal." Most tellingly, the memo concludes with a request to redirect Davidson to other contacts for his "interminable" inquiries, effectively attempting to distance the Chicago office from further involvement. The document's multiple redactions, particularly concealing personnel names and specific operational details, suggest the agency took Davidson's research seriously enough to maintain operational security even decades after the events. This case is significant not for any specific UFO sighting, but for what it reveals about the complex relationship between intelligence agencies and civilian UFO researchers during the Cold War era. Davidson was no conspiracy theorist—he was educated, methodical, and persistent enough to gain actual CIA cooperation. The agency's internal communications reveal a delicate balance: providing enough engagement to maintain credibility while managing a researcher who was publicly exposing their involvement in UFO matters. The mysterious radio transmissions Davidson investigated remain unidentified in the available documentation, and the code translations he sought from the CIA are not included in the declassified materials. The document's release through FOIA efforts by researcher John Greenewald Jr. and The Black Vault provides rare insight into how intelligence agencies handled civilian UFO inquiries during an era when official policy oscillated between public dismissal and private investigation. The heavy redactions, even in a 1958 document released decades later, indicate ongoing sensitivity about certain aspects of UFO-related intelligence work from this period.