CIA's Ralph Clark memo on 'Recent Sightings of Unexplained Objects'

When

Days after the Washington radar sightings, Ralph L. Clark, acting head of the CIA's Office of Scientific Intelligence, sent the Deputy Director for Intelligence a memo on recent unexplained sightings. The CIA's own history says the agency then formed a special OSI study group on the reports.

Sources

  1. OfficialCIA's Role in the Study of UFOs, 1947-90 (Gerald K. Haines, Studies in Intelligence) (opens in a new tab)Central Intelligence Agency / 1997
  2. OfficialCIA's Role in the Study of UFOs, 1947-90 (full text) (opens in a new tab)Central Intelligence Agency (copy hosted by the Federation of American Scientists) / 1997

How sources are chosen and tiered

Where it fits

See it on the timelineMore in Government