The music

A Day In The Life: The Music and Artistry of the Beatles
Delacorte Press 1995
A Hard Day's Write: The Stories Behind Every Beatles Song.
HarperCollins 1999
Beatles Not for Sale: The Beatles Musical Legacy As Archived on Unauthorized Recordings.
Collector's Guide Pub 1997
Beatlesongs.
Fireside 1989
Revolution In The Head: the Beatles records And the sixties.
Henry Holt & Company, Inc. 1994
Tell Me Why: The Beatles: Album by Album, Song by Song, The Sixties and After.
DaCapo Press 2002
The Beatles Complete Chord Songbook.
Hal Leonard Publishing Corpora 2000
The Beatles Complete Scores.
Hal Leonard Publishing Corpora 1993
The Beatles: A Recording History.
McFarland & Company 1986
The Beatles: Recording Sessions.
Harmony Books 1990
The Beatles: The Ultimate Recording Guide.
Adams Media Corporation 1994
The Making of the Beatles Sgt. Pepper.
Collector's Guide Pub 1997
The Making of the Beatles' Magical Mystery Tour.
Omnibus 1999