Question: Are Dalton Trumbo and Herman Wouk both screenwriters?

Context articles: Eclipse (Trumbo novel)
Dalton Trumbo
Brannigan (film)
Christopher Trumbo
Trumbo (2007 film)
Trumbo (2015 film)
War and Remembrance
City Boy: The Adventures of Herbie Bookbinder
Peter Askin
Herman Wouk

Eclipse is Dalton Trumbo's first novel published in 1935.
 The novel is about a town and its people written in the social realist style.
 The town, which Trumbo calls "Shale City," was modeled on Grand Junction, Colorado, where Trumbo lived from 1908 until he left for the University of Colorado in 1924.
 Trumbo's daughter Nikola writes in a foreword to a new edition of Eclipse that the character John Abbott was a substitute for Trumbo's father and "was based on the real-life Grand Junction citizen W.J. Moyer, (who) was also destroyed (as his father had been) by the depression."
 The new edition, published by the Mesa County Public Library Foundation in 2005, includes a list that matches Grand Junction residents to characters in the book and acknowledges that the book's sometimes harsh portrayal of Grand Junction made it controversial in Trumbo's hometown.
James Dalton Trumbo (December 9, 1905 – September 10, 1976) was an American screenwriter and novelist, who scripted films including "Roman Holiday", "Exodus", "Spartacus", and "Thirty Seconds Over Tokyo".
 One of the Hollywood Ten, he refused to testify before the House Un-American Activities Committee (HUAC) in 1947 during the committee's investigation of Communist influences in the motion picture industry.
 He was subsequently blacklisted by that industry.
 He continued working clandestinely, producing work under other authors' names.
 His uncredited work won two Academy Awards; the one for "Roman Holiday" (1953) was given to a front writer, and the one for "The Brave One" (1956) was awarded to a pseudonym.
 The public crediting of him as the writer of both "Exodus" and "Spartacus" in 1960 marked the end of the Hollywood Blacklist.
 His earlier achievements were eventually credited to him by the Writers Guild, 60 years after the fact.
Brannigan is a 1975 British thriller DeLuxe Color film directed by Douglas Hickox and starring John Wayne and Richard Attenborough filmed in Panavision.
 One of the screenwriters was Dalton Trumbo's son, Christopher Trumbo.
Christopher Trumbo (September 25, 1940 – January 8, 2011) was an American television writer, screenwriter and playwright.
 Trumbo was considered an expert on the Hollywood blacklist during the McCarthy era.
 His father, screenwriter Dalton Trumbo, was blacklisted by Hollywood for nearly a decade for refusing to testify to Congress, as one of a group known as The Hollywood Ten.
Trumbo is a 2007 American documentary film directed by Peter Askin, produced by Will Battersby, Tory Tunnell, and Alan Klingenstein, and written by Christopher Trumbo.
 It is based on the letters of Trumbo's father, Dalton Trumbo, an Oscar-winning screenwriter who was imprisoned and blacklisted as a member of the Hollywood Ten, ten screenwriters, directors and producers who refused to testify before the House Un-American Activities Committee (HUAC) in 1947 during the committee's investigation of Communist influences in the Hollywood film industry.
Trumbo is a 2015 American biographical drama film directed by Jay Roach and written by John McNamara.
 The film stars Bryan Cranston, Diane Lane, Helen Mirren, Louis C.K., Elle Fanning, John Goodman and Michael Stuhlbarg.
 The film follows the life of Hollywood screenwriter Dalton Trumbo and is based on the biography "Dalton Trumbo" by Bruce Alexander Cook.
War and Remembrance is a novel by Herman Wouk, published in October 1978 as the sequel to Wouk's "The Winds of War" (1971).
 "The Winds of War" covers the period 1939 to 1941, and "War and Remembrance" continues the story of the extended Henry family and the Jastrow family starting on 15 December 1941 and ending on 6 August 1945.
 The novel was adapted into a television mini-series, "War and Remembrance", and presented on American television in 1988.
 Wouk was a screenwriter for the miniseries as well as being author of the book.
City Boy: The Adventures of Herbie Bookbinder is a 1948 novel by Herman Wouk first published by Simon & Schuster.
 The second novel written by Wouk, "City Boy" was largely ignored by the reading public until the success of "The Caine Mutiny" resurrected interest in Wouk's writing.
 Like "The Caine Mutiny", the novel is semi-autobiographical in setting and situations, if not protagonist.
 In 1969 the novel was re-issued, with paperback editions in 1980 and 1992, and according to Wouk was translated into eleven languages.
 John P. Marquand, in a preface to the 1969 twentieth anniversary release, likened Herbie Bookbinder to a city-dwelling Huckleberry Finn or Tom Sawyer.
Peter Askin (Born 1940) is an actor, director, producer and screenwriter best known for directing the 2007 film "Trumbo", a documentary about the Oscar-winning Hollywood screenwriter Dalton Trumbo who was blacklisted for being a member of the Hollywood Ten.
 For the film, he worked closely with Trumbo's son, Christopher Trumbo.
Herman Wouk ( ; born May 27, 1915) is an American author.
 His 1951 novel "The Caine Mutiny" won the Pulitzer Prize for Fiction.
 His other works include "The Winds of War" and "War and Remembrance", historical novels about World War II, and non-fiction such as "This Is My God", a popular explanation of Judaism from a Modern Orthodox perspective, written for Jewish and non-Jewish audiences.
 His books have been translated into 27 languages. "
The Washington Post" called Wouk, who cherishes his privacy, “the reclusive dean of American historical novelists.”
 Historians, novelists, publishers, and critics who gathered at the Library of Congress in 1995 to mark Wouk's 80th birthday likened him to "an American Tolstoy."