English: In the early 1970s, the US government conducted surveillance on ex-Beatle John Lennon. This is a letter from the government files. After a 25-year Freedom of Information Request battle initiated by historian Jon Wiener, the files were released. Here is one page from the file. This second release received by Wiener was less heavily magic-markered out, that is, redacted. A prior version was released which showed most of the document with heavily blacked out text.