December 17th
1960: Returning from Hamburg, The Beatles appeared at the Casbah Coffee Club in Liverpool. Chas Newby joined The Beatles on bass guitar (to replace Stuart Sutcliffe, who had remained in Hamburg), a position he would hold for only two weeks and four performances. When Newby bowed out to return to college, Paul McCartney became The Beatles' bass player.

"I started playing acoustic guitar and then progressed to the bass guitar. I never wanted to be a professional musician – I had always longed to be a scientist." … Chas Newby
In fact, during his brief stint with the Beatles, Chas was on vacation from a university he was attending. John Lennon asked him to go with The Beatles to Germany when they were to make their second trip there, but he chose to return to the university instead. Newby would later become a Mathematics teacher at Droitwich Spa High School in Worcestershire, England … and he has never regretted his decision.
http://www.streamingoldies.com/modules.php?name=News&file=article&sid=23911961: In December 1961 The Beatles' manager Brian Epstein contacted a local wedding photographer, Albert Marrion, to see if he could take some pictures of the group. The session, which took place on this day, was The Beatles' first professional photography session.
http://www.beatlesbible.com/1961/12/17/beatles-first-photo-session/1961: Performance at the Casbah Coffee Club in West Derby, Liverpool.
1962: Transmission of a performance for Granada TV's `People And Places'.
1963: James Carroll at WWDC in Washington, DC, became the first disc jockey to broadcast a Beatles record on American radio. Carroll played 'I Want To Hold Your Hand', which he had obtained from his stewardess girlfriend, who brought the single back from the UK. Due to listener demand, the song was played daily, every hour. Since it hadn't been released yet in the States, Capitol Records initially considered court action, but instead released the single earlier than planned.
1963: The Playhouse Theatre, London. 3.00-6.30pm. Recording for BBC's `Saturday Club': `All I Want For Christmas'; `All My Loving'; `This Boy'; `I Want To Hold Your Hand'; `Till There Was You'; `Roll Over Beethoven'; `She Loves You'; `Crimble Medley'. Christmas special edition.


http://www.beatlesbible.com/1963/12/17/radio-saturday-club-6/
1965: The 3rd `Christmas Record' is sent to the members of the Fan Club.
http://www.dmbeatles.com/song.php?song=3991967: Hanover Banquet Rooms, London. Party hosted by John and George for the Area Secretaries of the Official Beatles Fan Club and other friends. Screening of a preview of `Magical Mystery Tour' and `The Beatles at Shea Stadium'.
1968: New York premiere of `Candy', a movie featuring an appearance by Ringo.
1969: John announces a plan for a peace festival in Toronto, to take place from 3 to 5 July 1970.
1977: George Harrison played an unannounced live set for the regulars at his local pub in Henley-On-Thames.

2010: Sir Paul McCartney performed an intimate lunchtime gig at the 100 Club on London's Oxford Street, the historic music venue threatened with closure. Around 300 fans were treated to a set lasting almost two hours, in what was McCartney’s smallest gig in the UK for nearly 10 years. A campaign to keep the 100 Club open had attracted support from Primal Scream's Bobby Gillespie and Sir Mick Jagger.