Watch: Wings perform "Letting Go," 1975

Concert poster: Beatles at the Tower Ballroom, New Brighton, July 27, 1962

Beatles historian Mark Lewisohn launches "Abbey Road" anniversary theater tour

Artifact: BBC TV "Juke Box Jury" ticket for Beatles performance

Artifact: "From Me to You" press packet

Artifact: Brian Epstein business card

Artifact: Paul McCartney school paper on architecture

Vintage pics: Paul and George

Vintage poster: "Films by John Lennon/Yoko Ono"

Paul's "Amoeba Gig" and other live LPs set for reissue

Artifact: John Lennon "thank you" note to contributors to Christmas Toy Fund

Artifact: John Lennon Christmas card to Pete Townshend of the Who

Record Collector mag plans three-part Beatles series