Question: The author of "Ticket to Ride" wrote how many books about the Beatles?

full_context: Document 1: Knowlton Nash: Cyril Knowlton Nash {'1': ", '2': ", '3': ", '4': "} (November 18, 1927 – May 24, 2014) was a Canadian journalist, author and news anchor. He was senior anchor of CBC Television's flagship news program, "The National" from 1978 until his retirement in 1988. He began his career in journalism by selling newspapers on the streets of Toronto during World War II. Before age 20, he was a professional journalist for British United Press. After some time as a freelance foreign correspondent, he became the CBC's Washington correspondent during the Kennedy and Johnson administrations, also covering stories in South and Central America and Vietnam. He moved back to Toronto in 1968 to join management as head of CBC's news and information programming, then stepped back in front of the camera in 1978 as anchor of CBC's late evening news program, "The National". He stepped down from that position in 1988 to make way for Peter Mansbridge. Nash wrote several books about Canadian journalism and television, including his own memoirs as a foreign correspondent.
Document 2: Larry Kane: Larry Kane (born October 21, 1942) is an American journalist, news anchor and author. Kane spent 36 years as a news anchor in Philadelphia, and is the only person to have anchored at all three Philadelphia owned and operated television stations. Early in his career, he was the only broadcast journalist to travel to every stop on the Beatles' 1964 and 1965 American tours. He has authored three books about the Beatles, as well as a memoir and a novel. Today he is the host of "Voice of Reason", a weekly news analysis program on the Comcast Network, as well as a consultant for NBC and a special contributor for KYW News Radio.
Document 3: Isaac in America: A Journey with Isaac Bashevis Singer: Isaac in America: A Journey with Isaac Bashevis Singer
Document 4: Ticket to Ride: "Ticket to Ride" is a song by the English rock group the Beatles, written by John Lennon and credited to Lennon–McCartney. Issued as a single in April 1965, it became the Beatles' seventh consecutive number 1 hit in the United Kingdom and their third consecutive number 1 hit in the United States, and similarly topped national charts in Canada, Australia and Ireland. The song was also included on their 1965 studio album "Help!" Recorded at EMI Studios in London in February that year, the track marked a progression in the Beatles' work through the incorporation of drone and harder-sounding instrumentation relative to their previous releases. Among music critics, Ian MacDonald describes the song as "psychologically deeper than anything the Beatles had recorded before" and "extraordinary for its time".
Document 5: Ticket to Ride (book): Ticket to Ride: Inside the Beatles' 1964 Tour that Changed the World is a 2003 memoir by Larry Kane. It accounts his experience as the only American reporter to travel with The Beatles' entourage in their 1964 and 1965 tours of The United States and Canada, at the height of Beatlemania. At the time the offer was given to him, Larry Kane was not himself a Beatles fan, so he wrote from the perspective of a journalist rather than a fan. Kane was recognized by the band to be reliable, likable and professional, and he gained the trust and confidence of each individual. As a direct result of this trust, Kane was given access to areas of The Beatles' psyches which other newsmen were not admitted to. At one point it tells the story of how The Beatles' manager, Brian Epstein, was courting Kane; oblivious to the whole situation, and as a result, Kane unknowingly led Epstein on. The book comes with a companion CD which contains interviews with The Beatles and commentary from the author looking back on the events from his current perspective.
Document 6: Beatles for Sale: Beatles for Sale is the fourth studio album by the English rock band the Beatles. It was released on 4 December 1964 in the United Kingdom on EMI's Parlophone label. Eight of the album's fourteen tracks appeared on Capitol Records' concurrent release, "Beatles '65", issued in North America only. The album marked a departure from the ebullient tone that had characterised the Beatles' previous work, partly due to the band's exhaustion after a series of tours that had established them as a worldwide phenomenon in 1964. The songs introduced darker musical moods and more introspective lyrics, with John Lennon adopting an autobiographical perspective in compositions such as "I'm a Loser" and "No Reply". The album also reflected the twin influences of country music and Bob Dylan, whom the Beatles met in New York in August 1964.
Document 7: Nowhere Man: The Final Days of John Lennon: Nowhere Man: The Final Days of John Lennon, first published in 2000 and written by New York journalist Robert Rosen, who in 1981 had access to John Lennon's diaries, is a controversial account of the ex-Beatle's last five years. The book disputes the official view of Lennon as a contented househusband raising his son Sean and baking bread while Yoko ran the family business. Instead, "Nowhere Man" portrays Lennon's daily life at the Dakota as that of a "tormented superstar, a prisoner of his fame, locked in his bedroom raving about Jesus Christ, while a retinue of servants tended to his every need."
Document 8: Murray the K: Murray Kaufman (February 14, 1922 – February 21, 1982), professionally known as Murray the K, was an influential rock and roll impresario and disc jockey of the 1950s, 1960s and 1970s. During the early days of Beatlemania, he frequently referred to himself as the fifth Beatle.
Document 9: The Beatles in Hamburg: The Beatles members John Lennon, Paul McCartney, George Harrison, Stuart Sutcliffe and Pete Best regularly performed at different clubs in Hamburg, Northern Germany, during the period from August 1960 to December 1962; a chapter in the group's history which honed their performance skills, widened their reputation, and led to their first recording, which brought them to the attention of Brian Epstein.
Document 10: Fifth Beatle: The fifth Beatle is an informal title that various commentators in the press and entertainment industry have applied to people who were at one point a member of the Beatles, or who had a strong association with the "Fab Four" (John Lennon, Paul McCartney, George Harrison, and Ringo Starr) during the group's existence. The "fifth Beatle" claims first appeared in the press immediately upon the band's rise to global fame in 1963–64. The members have offered their own beliefs of the "fifth Beatle":
Document 11: Peter Jennings: Peter Charles Archibald Ewart Jennings, CM (July 29, 1938August 7, 2005) was a Canadian-American journalist who served as the sole anchor of "ABC World News Tonight" for 22 years from 1983 until his death from lung cancer in 2005. Despite dropping out of high school, he transformed himself into one of American television's most prominent journalists.
Document 12: Lou Cannon: Louis Cannon (born 1933) is an American journalist, non-fiction author, and biographer. He was state bureau chief for the "San Jose Mercury News" in the late 1960s and later senior White House correspondent of the "Washington Post" during the Ronald Reagan administration. He is a prolific biographer of US President Ronald Reagan and has written five books about him.
Document 13: Brian Epstein: Brian Samuel Epstein ( ; 19 September 1934 – 27 August 1967) was an English music entrepreneur who managed the Beatles. Epstein first discovered the Beatles in November 1961 during a lunchtime performance at The Cavern Club. He was instantly impressed and saw great potential in the group. Epstein was rejected by nearly all major recording companies in London, until he secured a meeting with George Martin, head of EMI's Parlophone label. In May 1962, Martin agreed to sign the Beatles, partly because of Epstein's conviction that the group would become internationally famous.
Document 14: Derek Taylor: Derek Taylor (7 May 1932 – 8 September 1997) was an English journalist, writer, publicist and record producer. He is best known for his role as press officer to the Beatles, for whom he became one of several associates to earn the moniker "the Fifth Beatle". Before returning to London in 1968 to head the publicity for the Beatles' Apple Corps organisation, he worked as the publicist for California-based bands such as the Byrds, the Beach Boys and the Mamas and the Papas. Taylor was known for his forward-thinking and extravagant promotional campaigns, exemplified in taglines such as "The Beatles Are Coming" and "Brian Wilson Is a Genius". He was equally dedicated to the 1967 Summer of Love ethos and helped stage that year's Monterey Pop Festival.
Document 15: Bad to Me: "Bad to Me" is a song credited to Lennon–McCartney. In late interviews, John Lennon said that he wrote it for Billy J. Kramer with The Dakotas while on holiday in Spain. However, in a 1964 interview he said that he and Paul McCartney wrote it in the back of a van, so Paul contributed to it. Billy J. Kramer with The Dakotas released their recording of the song in 1963 and it became their first number 1 in the UK Singles Chart. Paul McCartney was present during the recording session at Abbey Road Studios. The single would be released in the US the following year, and become a top-ten hit there, reaching number 9. It became one of the first occasions a Lennon–McCartney composition made the US Top 40 recorded by an artist other than the Beatles (the first being "A World Without Love" by Peter & Gordon; another being "Goodbye" by Mary Hopkin).
ground_truth: three