Project Blue Book Collection: A Free Archive of Declassified Records and the Quest for Hidden Context in UFO History
To the point
John Greenewald created a free online archive, the Project Blue Book Collection, that bundles declassified documents from Project Blue Book and related Air Force studies (Sign and Grudge) from 1947–1969—roughly 130,000 pages and 10,000 PDFs—covering cases like the Exeter incident, the Kenneth Arnold sighting, and the Mantell crash, arguing these records belong in history even as some material is redacted and points to a larger, unresolved puzzle about unidentified flying objects.