John Griffith "Jack" London (born John Griffith Chaney; January 12, 1876 – November 22, 1916) was an American novelist, journalist, and social activist.
 A pioneer in the then-burgeoning world of commercial magazine fiction, he was one of the first fiction writers to obtain worldwide celebrity and a large fortune from his fiction alone, including science fiction.
August 1 is a 1988 Malayalam film directed by Sibi Malayil, written by S. N. Swamy, and starring Mammootty, Sukumaran, Captain Raju and Urvashi.
 The film was produced and distributed by M. Mani under the banner of Sunitha Productions.
 "August 1" is loosely based on the 1971 British novel "The Day of the Jackal" by Frederick Forsyth.
The Jackal is a fictional character, the villain of the novel "The Day of the Jackal" by Frederick Forsyth.
 He is an assassin who is contracted by the OAS French terrorist group of the early 1960s, to kill Charles de Gaulle, the President of France.
 The book was published on 7 June 1971, in the year following de Gaulle's death, and became an instant bestseller.
 In the original 1973 film adaptation, he is portrayed by Edward Fox.
 A revised version of the character was portrayed by Bruce Willis in the 1997 remake, "The Jackal", having a divergent storyline and set in the U.S., with the First Lady as target of the assassination.
Wrath of the Lion is a 1964 thriller novel by Jack Higgins.
 Like the more famous "The Day of the Jackal" by Frederick Forsyth, the background to Higgins' book is the last ditch effort by the OAS, a French dissident paramilitary organisation, to take revenge on Charles de Gaulle, the President of France, for his having granted independence to Algeria and ended French rule there.
Icon (or "Frederick Forsyth's Icon") is a 2005 made-for-television thriller film directed by Charles Martin Smith and very loosely based on the novel by Frederick Forsyth.
 The film premiered on Hallmark Channel May 30, 2005.
 It is set in the period 1985 to 1999.
Jack London Square is a popular entertainment and business destination on the waterfront of Oakland, California, United States.
 Named after the author Jack London and owned by the Port of Oakland, it is the home of stores, restaurants, hotels, an Amtrak station, a San Francisco Bay Ferry ferry dock, the historic Heinold's First and Last Chance Saloon, the (re-located) cabin Jack London lived in in the Klondike, and a movie theater.
 A farmer's market is hosted among the retail shops on Sunday mornings.
 The former presidential yacht USS "Potomac" is moored at an adjacent slip.
The Day of the Jackal is a 1973 Anglo-French political thriller film directed by Fred Zinnemann and starring Edward Fox and Michel Lonsdale.
 Based on the 1971 novel "The Day of the Jackal" by Frederick Forsyth, the film is about a professional assassin known only as the "Jackal" who is hired to assassinate French president Charles de Gaulle in the summer of 1963.
Frederick McCarthy Forsyth (born 25 August 1938) is an English author, former journalist and spy, and occasional political commentator.
 He is best known for thrillers such as "The Day of the Jackal", "The Odessa File", "The Fourth Protocol", "The Dogs of War", "The Devil's Alternative", "The Fist of God", "Icon", "The Veteran", "Avenger", "The Afghan", "The Cobra" and "The Kill List".
The Day of the Jackal (1971) is a thriller novel by English writer Frederick Forsyth about a professional assassin who is contracted by the OAS, a French dissident paramilitary organisation, to kill Charles de Gaulle, the President of France.
Jack London State Historic Park, also known as Jack London Home and Ranch, is a California State Historic Park near Glen Ellen, California, United States, situated on the eastern slope of Sonoma Mountain.
 It includes the ruins of a house burned a few months before Jack London and family were to move in, a cottage in which they had lived, another house built later, and the graves of Jack London and his wife.
 The property is both a California Historical Landmark and a National Historic Landmark.

Question: Which author wrote "The Day of the Jackal", Frederick Forsyth or Jack London?
Answer: Frederick McCarthy Forsyth