Title: Jack (Lundell novel)
Content:  Jack is the first novel by Swedish writer, composer and musician Ulf Lundell, published in 1976.
Title: Jack (Robinson novel)
Content:  Jack is a novel by Marilynne Robinson, published in September 2020. It is Robinson's fifth novel overall and her fourth in the Gilead sequence, preceded by Gilead (2004), Home (2008), and Lila (2014). It focuses on John Ames "Jack" Boughton, the troubled son of Robert Boughton. He was named after Robert's friend Reverend John Ames, the subject of Gilead (2004). It tells the story of the courtship of Della Miles and Jack Boughton, an interracial couple in post-World War II St. Louis, Missouri.
Title: Jack McClelland (publisher)
Content: James King, Jack: The Story of Jack McClelland, Toronto: Knopf Canada, 1999. 
Title: Jack (Homes novel)
Content:  Jack is the 1990 debut novel by American writer A. M. Homes, written when she was 19. She wrote the novel while attending Sarah Lawrence College. It is a bildungsroman or coming-of-age novel, dealing with a 15-year-old boy's grappling with issues of divorce and sexuality in his family and among his friends.
Title: Jack Says
Content:  A prequel story to the film is available as a graphic novel. Titled Jack Said; ISBN: 978-0-9556927-0-3; it details the events leading up to the beginning of the Jack Says film. The graphic novel is written by Paul Tanter and illustrated by Oscar Alvarado.
Title: Jack (hero)
Content: William Bernard McCarthy, Cheryl Oxford and Joseph Daniel Sobol, Jack in Two Worlds: Contemporary North American Tales and Their Tellers, University of North Carolina Press (1994), ISBN: 978-0-8078-2135-0 ; Julia Taylor Ebel, Orville Hicks: Mountain Stories, Mountain Roots, Parkway Publishers (2005), ISBN: 978-1-933251-02-8 ; Duncan Williamson, Don't Look Back, Jack!: Scottish Traveller Tales, Canongate Books (1990) ISBN: 978-0-862413-09-5 
Title: Jackals (novel)
Content:  Jackals is a horror novel and thriller novel by Charles L. Grant. It was first published in 1994 by Forge Books in the United States and in the UK by New English Library. Jackals is the author's final stand-alone novel before his death in 2006. Grant continued to write novels in various series - and genres - and short stories for anthologies. Stephen King said of Jackals: '[t]he premier horror writer of his or any generation'.
Title: Benedict Jacka
Content:  Jacka was born in England and attended the City of London School. He later attended Cambridge University, where he graduated with a Bachelors in philosophy and met his editor Sophie Hicks from Ed Victor Ltd. His first novels were three children's fantasy novels that didn’t get published, with that honour going to a children's non-fantasy novel called To Be A Ninja (Later: Ninja: The Beginning). From 2000 on, he developed a fantasy setting for which he wrote four books, whose main characters were teenage elementals. None of the four were published. In 2009, he decided to try again with an adult character and a more information-based ability. Three years later, in 2012, he published the first book of the Alex Verus series, two more followed the same year. Jacka married in 2015 to Rolari Kuti. Critical reception for Jacka's work has been mostly positive. Of the Alex Verus series, SF Site has cited the series' characters and chapter cliffhangers as highlights. SF Crowsnest gave an overall positive review for Cursed, while stating it was "an enjoyable, if unchallenging, read".
Title: Donald Jack
Content:  Donald Lamont Jack (6 December 1924 – 2 June 2003) was an English and Canadian novelist and playwright.
Title: Jack (2013 film)
Content:  The Globe and Mail called Jack a "varnished version of Mr. Layton", while John Doyle of the same periodical, wrote "[Jack Layton] moved us; the biopic [on him], not so much".

Question: Who is the author of Jack?
Answer: John Farnham.
John Peter Farnham.