The Beatles recorded together for a little over seven years and the catalogue created has sold more than any other group in music history.
Opinion 'Now and Then, I Miss You': The Love Story at the Heart of the Last Beatles Song - The New York Times
The Beatles' Team Talks About Creation, Promotion of 'Now and Then
The inside story of why The Beatles really broke up - Gold
The Beatles: The lives and musical careers of John, Paul, George and Ringo
The Beatles - Wikipedia
Pin by Jayci Cosens on John, Paul, George & Ringo
Paul McCartney and Ringo Starr: We never thought the Beatles would last
Five Lingering Questions About 'The Beatles: Get Back' - The Ringer
How The Beatles Earned $71 Million This Year, Sort Of
The Beatles Collectables - Collectables