archive_org · gov / mil cred 4 · 1951-01-01 1951-05-7007632-ChicagoIll Embedded from archive.org · open direct · source page 1951-05-7007632-ChicagoIll Tags agency: US Air Force evidence: Document program: Project Blue Book source: Public ArchiveSocial Media Metadata (16) Sourcearchive_orgSource tier1 (gov / mil)Credibilitytier 4 / 5KinddocumentMIMEapplication/pdfSize0.54 MBAuthorU.S. Air ForcePublished1951-01-01LanguagequgFirst seen2026-05-10 08:52Last seen2026-05-10 08:52Source URLhttps://archive.org/details/1951-05-7007632-ChicagoIllDirect URLhttps://archive.org/download/1951-05-7007632-ChicagoIll/1951-05-7007632-ChicagoIll.pdf· mediatypetexts· subjectUFO, UFOs, Unidentified Flying Object, Unidentified Flying Objects, Air Force, U.S. Air Force, Blue Book, Project Blue Book· querysubject:"unidentified flying object" Permalink: /item/01KR8HD7TZDARJEW117E32HE65.html Related archive_org · gov / mil cred 4 35 Project Blue Book - 1940s Case Files - 505 cases Project Blue Book was one of a series of systematic studies of unidentified flying objects (UFOs) conducted by the United States Air Force. It started in 1952, and it was the third study of its kind (the first two were projects Sign (1947) and Grudge (1949)). A termination order… 2015-01-01 archive_org · gov / mil cred 4 31 Project Blue Book : the top secret UFO findings revealed vii, 423 pages, 32 unnumbered pages of plates : 18 cm Includes bibliographical references 1990-01-01 archive_org · gov / mil cred 4 33 Project BLUE BOOK (roll 1) Roll 1 (microfilm) Case Files of Individual Sightings, Index, and File Nos. 1-54 , summer 1947-July 9, 1947, Project Blue Book . Released by U.S.National Archives and Records Administration (NARA), 1976. RG (Record Group) 341. 1976-01-01 archive_org · gov / mil cred 4 32 Project Blue Book : the top secret UFO findings revealed Includes bibliographical references 1976-01-01 archive_org · gov / mil cred 4 31 1969 01 7171740 Boydton Virginia 1969 01 7171740 Boydton Virginia 1969-01-01 archive_org · gov / mil cred 4 31 1969 02 6779126 Dallastown Pennsylvania 1969 02 6779126 Dallastown Pennsylvania 1969-01-01 archive_org · gov / mil cred 4 31 1969 01 7171622 Covington Ohio 1969 01 7171622 Covington Ohio 1969-01-01 archive_org · gov / mil cred 4 31 1969 09 7442856 Dayton Ohio 1969 09 7442856 Dayton Ohio 1969-01-01