Imagine -- the size of the file.

"UC Irvine historian Jon Wiener has been suing the government under the Freedom of Information Act since 1983 for complete access to the voluminous John Lennon FBI files. J. Edgar Hoover began surveillance of the ex-Beatle in 1971 when Lennon's protests of the Vietnam War made him a deportation target of President Nixon."

Link to LAObserved.