The 5th broadcast of Orson Welles' series for CBS Radio, The Mercury Theatre on the Air, from 8 August 1938, dramatizes three short stories rather than one long story. The second of the three stories is "The Open Window."
"The Open Window" is also adapted (by John Allen) in the 1962 Golden Records release Alfred Hitchcock Presents: Ghost Stories for Young People, a record album of six ghost stories for children.