James Pinckney Miller (December 18, 1919, San Antonio, Texas - November 1, 2001, Flemington, New Jersey), known to friends and associates by the nickname Pappy, wrote under the name JP Miller. He was a leading playwright during the Golden Age of Television, receiving three Emmy nominations. A novelist and screenwriter, he was best known for Days of Wine and Roses, directed by John Frankenheimer for Playhouse 90 (1958) and later a motion picture (1962) directed by Blake Edwards.
Miller was the son of construction engineer Rolland James Miller and touring actress Rose Jetta Smith Miller. At the age of 17, living in Palacios, Texas, he sold his first story to Wild West Weekly. That same year, he boxed professionally in Beaumont, Texas and other Texas rings under the name Tex Frontier, usually earning $10 a fight.