Documents / FOIA release
This Federal Bureau of Investigation file section collects 1954 to 1961 correspondence and memoranda about flying saucers. Most of it concerns the Detroit Flying Saucer Club, which the Detroit office reported on from informants and chose not to investigate, while Bureau headquarters said saucer matters belonged to the Air Force. It also includes public letters to J. Edgar Hoover, a 1955 North Carolina sighting report, Leonard Stringfield's 1961 anonymous warning call, and policy reviews that restate the practice of referring reports to the Air Force.
“UFO Files”11 pages
Your letter of January 20th has been received. In response to your inquiry, the FBI has not conducted an investigation as you mentioned inasmuch as this would not come within our investigative jurisdiction. The presence of an Agent was simply to determine whether or not any violation may have occurred in which the FBI would have an interest, and for no other reason. While I would like to be of assistance to you, the files of the FBI must be maintained as confidential in accordance with regulations of the Department of Justice and are available for official use only. In view of this, I am sure you will understand why I cannot be of any further assistance in this instance. Sincerely yours, 2. Edgar Hoover
FOIA release, from the fbi-vault collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 148 pages are in the text index: search them above, or from the library's search.