Discography:
Top Pop Albums:1955-2001.
Whitburn, Joel.
Record Research, Inc. 2001.
ASCAP Ace Database (http://www.ascap.com)
BMI Database (http://www.bmi.com)
Timeline:
Lennon: The Definitive Biography.
Coleman, Ray.
HarperPerennial. 1992.
The Beatles Anthology.
The Beatles
Chronicle Books LLC. 2000.
Material and Memorabilia:
All Material provided is courtesy of the Songwriters Hall of Fame Archives and Lenono Photo Archives.