3 events
Three-volume Air Force Office of Special Investigations dossier (Box 7) containing 233 incident summary reports from 1955. Released by the Department of War as part of PURSUE Release 01.
State Department numerical and intelligence-collection files spanning 1948–1955, with entries on UAP / flying-disc diplomatic reporting.
FBI Detroit field office investigative files 100-DE-26505 and 100-DE-18221, covering early-Cold-War flying disc and UFO reports across Michigan and the Great Lakes region. Released by the Department of War in PURSUE Release 01.