Encounter Atlas
Why it matters
Often cited as the start of official debunking policy.
Official releases / USUnited States
Robertson Panel report
In January 1953 a CIA-convened panel of scientists led by H.P. Robertson reviewed the best Air Force cases and films. It found no threat and no new physics, and recommended a public education campaign to take the mystery out of UFOs. A cleaned-up version came out in 1958.