Question: Are James Ellroy and Saki both published writers ?

Context paragraphs:
L.A. Confidential: L.A. Confidential (1990) is neo-noir novel by James Ellroy, and the third of his L.A. Quartet series.  James Ellroy dedicated "L.A. Confidential" "to Mary Doherty Ellroy".  The epigraph is "A glory that costs everything and means nothing—Steve Erickson."

Blood's a Rover: Blood's a Rover is a 2009 crime fiction novel by American author James Ellroy.  It follows "American Tabloid" and "The Cold Six Thousand" as the final volume of Ellroy's Underworld USA Trilogy.  A 10,000-word excerpt was published in the December 2008 issue of "Playboy".  The book was released on September 22, 2009.  James Ellroy dedicated "Blood's a Rover" ""To J.M. Comrade: For Everything You Gave Me"."

Saki: Hector Hugh Munro (18 December 1870 – 14 November 1916), better known by the pen name Saki, and also frequently as H. H. Munro, was a British writer whose witty, mischievous and sometimes macabre stories satirize Edwardian society and culture.  He is considered a master of the short story, and often compared to O. Henry and Dorothy Parker .  Influenced by Oscar Wilde, Lewis Carroll and Rudyard Kipling, he himself influenced A. A. Milne, Noël Coward and P. G. Wodehouse.

The Cold Six Thousand: The Cold Six Thousand is a 2001 crime fiction novel by James Ellroy.  It is the first sequel to "American Tabloid" in the Underworld USA Trilogy and continues many of the earlier novel's characters and plotlines.  Specifically, it follows three rogue American law-enforcement officials and their involvement in the turmoil of the 1960s.  James Ellroy dedicated "The Cold Six Thousand" ""To" BILL STONER."

The Big Nowhere: The Big Nowhere is a 1988 crime fiction novel by James Ellroy, the second of the L.A. Quartet, a series of novels set in 1940s and 1950s Los Angeles.  James Ellroy dedicated "The Big Nowhere" "To Glenda Revelle."  The epigraph for "The Big Nowhere" is a passage from a novel; "It was written that I should be loyal to the nightmare of my choice- Joseph Conrad Heart of Darkness."

White Jazz: White Jazz is a 1992 crime fiction novel by James Ellroy.  It is the fourth in his L.A. Quartet, preceded by "The Black Dahlia", "The Big Nowhere", and "L.A. Confidential".  James Ellroy dedicated "White Jazz" "TO "Helen Knode"."  The epigraph for "White Jazz" is "'In the end I possess my birthplace and I am possessed by its language.'  -Ross MacDonald."

American Tabloid: American Tabloid is a 1995 novel by James Ellroy.  The novel chronicles three rogue American law enforcement officers from November 22, 1958 through November 22, 1963.  Each becomes entangled in a web of interconnecting associations between the FBI, CIA, and the Mafia, which eventually leads to their involvement in the John F. Kennedy assassination.  James Ellroy dedicated "American Tabloid" ""To" NAT SOBEL."

My Dark Places (book): My Dark Places: An L.A. Crime Memoir is a 1996 book, part investigative journalism and part memoir, by American crime-fiction writer James Ellroy.  Ellroy's mother Geneva was murdered in 1958, when he was 10 years old, and the killer was never identified.  The book is Ellroy's account of his attempt to solve the mystery by hiring a retired Los Angeles County homicide detective to investigate the crime.  Ellroy also explores how being directly affected by a crime shaped his life - often for the worse - and led him to write crime novels.  The book is dedicated to his mother.

Hollywood Nocturnes: Hollywood Nocturnes is a 1994 collection of short stories by James Ellroy.  Like many of Ellroy's novels, the majority of the stories are set in 1940s and 1950s.  The collection was inspired by Ellroy's having seen the film Daddy-O and finding cosmic significance in the image of Dick Contino, whom Ellroy tracked down to interview for the book.  The first segment of the book, "Dick Contino's Blues," is a novella about Contino tracking down a serial killer while trying to repair his public image after being labeled a draft-dodger.  Several other stories resurrect deceased Ellroy protagonists, recalling major events in their lives as they near death.

James Ellroy: Lee Earle "James" Ellroy (born March 4, 1948) is an American crime fiction writer and essayist.  Ellroy has become known for a telegrammatic prose style in his most recent work, wherein he frequently omits connecting words and uses only short, staccato sentences, and in particular for the novels "The Black Dahlia" (1987), "The Big Nowhere" (1988), "L.A. Confidential" (1990), "White Jazz" (1992), "American Tabloid" (1995), "The Cold Six Thousand" (2001), and "Blood's a Rover" (2009).

Supporting paragraphs: James Ellroy Saki
Answer: yes