Question: Which 1969 American drama film did Waldo Salt win an award for ?

Context paragraphs:
The Day of the Locust (film): The Day of the Locust is a 1975 American drama film directed by John Schlesinger, and starring William Atherton, Karen Black, Donald Sutherland, and Geraldine Page.  The screenplay by Waldo Salt is based on the 1939 novel of the same title by Nathanael West.  Set in Hollywood, California just prior to World War II, it depicts the alienation and desperation of a disparate group of individuals whose dreams of success have failed to come true.

Midnight Cowboy: Midnight Cowboy is a 1969 American drama film based on the 1965 novel of the same name by James Leo Herlihy.  The film was written by Waldo Salt, directed by John Schlesinger, and stars Jon Voight alongside Dustin Hoffman.  Notable smaller roles are filled by Sylvia Miles, John McGiver, Brenda Vaccaro, Bob Balaban, Jennifer Salt and Barnard Hughes.

The Gang That Couldn't Shoot Straight (film): The Gang That Couldn't Shoot Straight is a 1971 American Mafia comedy film directed by James Goldstone and written by Waldo Salt, based on the 1969 novel "The Gang That Couldn't Shoot Straight" by Jimmy Breslin, which in turn was based on the life of gangster Joe Gallo.  The film stars Jerry Orbach, Leigh Taylor-Young, Jo Van Fleet, Lionel Stander, Robert De Niro and Irving Selbst.  The film was released on December 22, 1971, by Metro-Goldwyn-Mayer.

Joe the King: Joe the King is a 1999 drama film, written and directed by Frank Whaley, based largely on his own childhood and the childhood of his brother.  It stars Noah Fleiss, Val Kilmer, Karen Young, Ethan Hawke, John Leguizamo, Austin Pendleton, Camryn Manheim, Max Ligosh and James Costa.  The film premiered at the 1999 Sundance Film Festival, where it won the Waldo Salt Screenwriting Award (shared with "Guinevere").

Waldo Salt: Waldo Miller Salt (October 18, 1914 – March 7, 1987) was an American screenwriter, winner of Academy Awards for both "Midnight Cowboy" and "Coming Home".

Stephanie Daley: Stephanie Daley — retitled What She Knew for US television — is a 2006 film starring Amber Tamblyn, Melissa Leo, Tilda Swinton and Timothy Hutton.  The film, which received a limited release in North America on April 20, 2007, focuses on the issue of teenage pregnancy.  "Stephanie Daley" was developed at the Sundance Writers' and Filmmakers' Lab, and premiered at the 2006 Sundance Film Festival, where it won the Waldo Salt Screenwriting Award.  The film also earned Tamblyn a nomination for best supporting female at the 2006 Independent Spirit Awards and the Leopard prize for best actress at the 2006 Locarno film festival.

Serpico: Serpico is a 1973 American neo-noir crime drama film directed by Sidney Lumet, and starring Al Pacino.  Waldo Salt and Norman Wexler wrote the screenplay, adapting Peter Maas's biography of NYPD officer Frank Serpico, who went undercover to expose corruption in the police force.  Both Maas's book and the film cover 12 years, 1960 to 1972.

Coming Home (1978 film): Coming Home is a 1978 American drama film directed by Hal Ashby, and starring Jane Fonda, Jon Voight and Bruce Dern.  The screenplay by Waldo Salt and Robert C. Jones was from a story by Nancy Dowd.  The film follows between a young woman, her Marine husband, and the paralyzed Vietnam War veteran she meets while her husband is overseas.  Fonda and Voight won Academy Awards for their performances, while Dern was nominated for an Academy Award.

James C. Strouse: James C. Strouse is an American screenwriter and film director.  He wrote the film "Lonesome Jim" (2005), directed by Steve Buscemi.  He wrote and made his directorial debut with "Grace Is Gone" (2007) starring John Cusack.  Strouse won an Audience Award for most popular dramatic feature and the Waldo Salt Screenwriting Award at the 2007 Sundance Film Festival for the film.  He next wrote and directed the film "The Winning Season" (2009), starring Sam Rockwell and Emma Roberts.  Strouse is a native of Goshen, Indiana and was an MFA student at Columbia University for fiction writing.  His film "People Places Things" was released in 2015.

Hilary Brougher: Hilary Brougher is a screenwriter and director living and working in N.Y.C. Brougher also is a member of Faculty in the MFA Film Program, at Columbia University School of the Arts and the Advisor for Columbia Women in Film (C-WIF) She wrote and directed her first feature, THE STICKY FINGERS OF TIME in 1996.  She wrote and directed her second feature, STEPHANIE DALEY in 2006.  The film starred Tilda Swinton, Amber Tamblyn, Melissa Leo, Tim Hutton and Denis O’Hare.  In 2006, the film won the Waldo Salt Screenwriting Award at the Sundance Film Festival and Brougher won Best Director at the Milan International Film Festival, while actress Amber Tamblyn won Best Actress from The Locarno International Film Festival in 2006.  The film was bought by Lifetime Television and the title changed to WHAT SHE KNEW.  In 2014 Brougher was credited as co-writer with Tristine Skyler and director of the adaptation of Jane Mendelsohn’s novel, INNOCENCE.  Critically, the film was received poorly.  [7] There’s no record of Brougher having spoken publicly about her creative role in the film.  As of 2015, Brougher describes a feature in development, LILA’S INSIDE with actress Sarita Choudhury attached.

Supporting paragraphs: Waldo Salt Midnight Cowboy
Answer: Midnight Cowboy