Title: O Jerusalem!
Content:  O Jerusalem! is a history book published in 1971 by Dominique Lapierre and Larry Collins that seeks to capture the events and mishaps surrounding the creation of Israel, and the subsequent mass expulsion of Palestinians.
Title: Jerusalem (Moore novel)
Content:  Jerusalem is a novel by British author Alan Moore, wholly set in and around the author's home town of Northampton, England. Combining elements of historical and supernatural fiction and drawing on a range of writing styles, the author describes it as a work of "genetic mythology". Published in 2016, Jerusalem took a decade to write. The novel is divided into three Books, "The Boroughs", "Mansoul", and "Vernall's Inquest".
Title: Jerusalem (comics)
Content:  Jerusalem: Chronicles from the Holy City, originally published in French as Chroniques de Jérusalem, is a 2011 graphic novel written and illustrated by Guy Delisle. Jerusalem is a travelogue and memoir in which Delisle recounts his trip to Jerusalem, parts of Palestine and the West Bank, as well as within Israel, with his two young children and his long-term partner, Nadège, who went there to do administrative work for Médecins Sans Frontières (MSF).
Title: Jerusalem: The Biography
Content:  Jerusalem: The Biography is a 2011 bestselling non-fiction book by British popular historian and writer Simon Sebag Montefiore.
Title: Jerusalem
Content: Cheshin, Amir S.; Bill Hutman and Avi Melamed (1999). Separate and Unequal: the Inside Story of Israeli Rule in East Jerusalem. Harvard University Press. ISBN: 978-0-674-80136-3. ; Cline, Eric (2004). Jerusalem Besieged: From Ancient Canaan to Modern Israel. Ann Arbor: University of Michigan Press. ISBN: 0-472-11313-5. ; Collins, Larry, and La Pierre, Dominique (1988). O Jerusalem!. New York: Simon & Schuster ISBN: 0-671-66241-4. ; Gold, Dore (2007) The Fight for Jerusalem: Radical Islam, The West, and the Future of the Holy City. International Publishing Company J-M, Ltd. ISBN: 978-1-59698-029-7. ; Köchler, Hans (1981) The Legal Aspects of the Palestine Problem with Special Regard to the Question of Jerusalem Vienna: Braumüller ISBN: 3-7003-0278-9. ; The Holy Cities: Jerusalem produced by Danae Film Production, distributed by HDH Communications; 2006 ; Wasserstein, Bernard (2002) Divided Jerusalem: The Struggle for the Holy City New Haven and London: Yale University Press. ISBN: 0-300-09730-1. ; "Keys to Jerusalem: A Brief Overview", The Royal Islamic Strategic Studies Center, Amman, Jordan, 2010. ; Sebag Montefiore, Simon (2011) Jerusalem: The Biography, London: Weidenfeld and Nicolson, ISBN: 978-0-297-85265-0. ; Young, Robb A (2012) Hezekiah in History and Tradition Brill Global Oriental Hotei Publishing, Netherlands. 
Title: Esther Cailingold
Content: Martin Gilbert: Jerusalem in the 20th Century. Chatto & Windus, 1996. ; Collins & Lapierre: O Jerusalem. History Book Club, 1972. ; Dan Kurtzman: Genesis 1948. Da Capo Press edition, 1992. ; Asher Cailingold: An Unlikely Heroine. Valentine Mitchell, 2000. ; Harry Levin: Jerusalem Embattled. Cassell edition, 1997. ; Yehuda Avner: The Prime Ministers: An Intimate Narrative of Israeli Leadership. Toby Press, 2010. 
Title: Jerusalem: The Biography
Content: 2011: National Jewish Book Award for Jewish Book of the Year 
Title: Jerusalem (Lagerlöf novel)
Content:  Jerusalem is a novel by the Swedish writer Selma Lagerlöf, published in two parts in 1901 and 1902. The narrative spans several generations in the 19th century, and focuses on several families in Dalarna, Sweden, and a community of Swedish emigrants in Jerusalem. It is loosely based on a real emigration that took place from the parish of Nås in 1896. As part of her research Lagerlöf went to visit Horatio and Anna Spafford at the American Colony, Jerusalem.
Title: Jerusalem: The Biography
Content:  beginning of his book, Montefiore clearly explains that neither does he intend to provide a history of Judaism, Christianity or Islam, nor a study of the nature of God in Jerusalem: for these he remands elsewhere, to a plethora of other publications. His task, Montefiore affirms, is to pursue the facts, not to adjudicate between the mysteries of different religions or the secular reasons behind historical events: Jerusalem is a synthesis based on a wide reading of the primary sources, ancient and modern, on personal seminars with specialists, professors, archaeologists, families and statesmen, and on the author's multiple visits to Jerusalem, the shrines and archaeological digs. In December 2011, Simon Sebag Montefiore presented on BBC Four a three-part history of Jerusalem, based on his book and by the title Jerusalem: The Making of a Holy City.
Title: O Jerusalem (film)
Content:  O Jerusalem is a 2006 drama film directed by Elie Chouraqui. It is based on the historical documentary novel of the same name, written by Dominique Lapierre and Larry Collins. The working title for release in the US is Beyond Friendship. It was produced for US distribution by Jeffrey Konvitz.

Question: Who is the author of Jerusalem?
Answer: Moses Mendelssohn.