Paul Osborn
Paul Osborn (September 4, 1901 – May 12, 1988) was an American playwright and screenwriter. Osborn's original plays are The Vinegar Tree, Oliver Oliver, and Morning's at Seven and among his several successful adaptations, On Borrowed Time has proved particularly popular. He wrote the screenplays for East of Eden (1955) and South Pacific (1958), among other films. Description above from the Wikipedia article Paul Osborn, licensed under CC-BY-SA, full list of contributors on Wikipedia.
