This is a 1976 National Archives index for Project Blue Book microfilm records (T1206). It catalogs sighting case files, administrative reports, and OSI records from 1947 to 1969.
This microfilm record contains case files and evaluations of UAP sightings from 1947-1948 under Projects Blue Book, Grudge, and Sign. It documents the military's systematic attempt to categorize sightings, identify hoaxes, and distinguish between astronomical phenomena, balloons, and unexplained objects.
This archive contains official Air Force status reports and administrative documentation for Projects Sign, Grudge, and Blue Book from 1949 to 1953. It details the military's methodology for investigating UFO reports, concluding that most sightings are attributable to conventional causes, natural phenomena, or human error.
This report is a statistical analysis of 4,000 UFO sightings from 1947-1952. It concludes that UFOs pose no threat to national security and are likely misidentified conventional objects or natural phenomena.
This document is an index for Project Blue Book administrative files on microfilm. It summarizes the program's history, objectives, and the Air Force's official stance that UFOs do not pose a national security threat.
This microfilm roll contains OSI district files from 1949-1967 documenting numerous UFO and unconventional aircraft sightings. It provides a historical record of the Air Force's investigative procedures and inter-agency coordination regarding aerial phenomena.
An investigation into a reported UFO sighting near North Wilton, Connecticut, on 23 February 1955. No physical evidence or radar confirmation was found, and the case was closed.