Project Blue Book was the official USAF project to investigate UFOs. The USAF UFO program was active from January 1948 until December 1969, and investigated approximately 13,000 UFO reports. Following the closure, the project files were transferred to the Air Force Archives at Maxwell AFB, Montgomery, AL, and later, to the National Archives for redaction and public release in 1976. The files currently reside at the National Archives in College Park, Maryland. See: Records of Headquarters United States Air Force (Air Staff); Records of Project Blue Book 1947-69, Record Group 341.15 (NARA Microfilm Publication T1206); National Archives at College Park, College Park, MD. The records are available on line from: BlueBookArchive.org; and Fold3.com.