Question: Who was an American producer, Russell Edson or Sidney Sheldon?

Context paragraphs:
Windmills of the Gods (miniseries): Windmills of the Gods is a 1988 American two-part television miniseries directed by Lee Philips and starring Jaclyn Smith and Robert Wagner.  It is based on the novel of the same name written by Sidney Sheldon, who also served as executive producer.  It was broadcast in two parts by CBS on February 7, 1988 and February 9, 1988.  It was the fifth miniseries based on a Sheldon's book, and the third adaptation starred by Jaclyn Smith.

A Stranger in the Mirror: A Stranger in the Mirror is a 1976 novel written by Sidney Sheldon.  The novel is one of the earliest Sheldon's works, but contains the typical Sheldon fast-paced narration and several narrative techniques with the exception of a twist ending.  The novel tells the life story of two fictitious Hollywood celebrities - Toby Temple and Jill Castle (roman à clef on Sheldon's acquaintances Groucho Marx and Erin Fleming) portray the emotional extremes of success and failure and how people inevitably become victims of time.  It was adapted into a television film in 1993 starring Perry King, Lori Loughlin, Christopher Plummer, and Juliet Mills.

Russell Edson: Russell Edson (1935 – April 29, 2014) was an American poet, novelist, writer and illustrator, and the son of the cartoonist-screenwriter Gus Edson.

Bloodline (1979 film): Bloodline is a thriller film picture released in 1979.  Based upon the novel "Bloodline" by Sidney Sheldon, it was produced by Paramount Pictures and directed by Terence Young with music by Ennio Morricone.  The film was also released under the title "Sidney Sheldon's Bloodline".  It was the only R-rated film to star Audrey Hepburn.

If Tomorrow Comes (miniseries): Sidney Sheldon's If Tomorrow Comes is a 1986 CBS miniseries based on the 1985 novel of the same name by Sidney Sheldon, starring Madolyn Smith, Tom Berenger and David Keith.  It was directed by Jerry London and the screenplay was written by Carmen Culver.

Tilly Bagshawe: Matilda Emily "Tilly" Bagshawe (born 12 June 1973) is a British freelance journalist and author.  She is best known for her books in the vein of best-selling American author Sidney Sheldon, notably "Sidney Sheldon's Mistress of the Game" and "Sidney Sheldon's After the Darkness".

Sidney Sheldon: Sidney Sheldon (February 11, 1917 – January 30, 2007) was an American writer and producer.

Sidney Sheldon's After the Darkness: Sidney Sheldon's After the Darkness is a 2010 novel by Tilly Bagshawe.  Bagshawe began writing Sidney Sheldon works after the latter's death in 2007.  After writing "Mistress of the Game", Tilly Bagshawe once again recaptured the late Sidney Sheldon’s way of thriller writing in "After the Darkness".  The novel echoes the Bernie Madoff scandal in America.

The Buster Keaton Story: The Buster Keaton Story is a 1957 American drama film directed by Sidney Sheldon and written by Sidney Sheldon and Robert Smith.  The film stars Donald O'Connor, Ann Blyth, Rhonda Fleming, Peter Lorre, Larry Keating and Jackie Coogan.  The film was released on April 21, 1957, by Paramount Pictures.  The film was described by AllMovie as "sublimely inaccurate" regarding details of Keaton's life.  It was produced by Paramount Pictures, which paid Keaton $50,000 for the rights to his life story, allowing Keaton to remain financially solvent for the remainder of his life.

Sidney Sheldon's Mistress of the Game: Sidney Sheldon's Mistress of the Game is a 2009 novel by Tilly Bagshawe.  It is the sequel to Sidney Sheldon's critically acclaimed 1982 novel "Master of the Game", which had debuted at number one on the "New York Times" Bestseller List and was later adapted into a 1984 television miniseries.  "Mistress of the Game" continues the story of the powerful Blackwell family as the lifelong conflict between twins Eve and Alexandra extends to their children.

Supporting paragraphs: Russell Edson Sidney Sheldon
Answer: Sidney Sheldon