Encounter Atlas
Why it matters
Shows the CIA's real interest was intelligence and public panic, not little green men, and that its own spy planes caused many sightings.
Official releases / USUnited States
CIA reading room: "UFOs: Fact or Fiction?"
The CIA's online reading room gathers its declassified UFO documents into one collection: memos from the early 1950s, the Robertson Panel papers, foreign sighting reports and analysis of the U-2 and OXCART spy planes that were often mistaken for UFOs.