On this day in radio history - The War of the Worlds (1938):

The War of the Worlds

directed by Orson Welles,

originally broadcast on CBS Radio, on October 30, 1938.
A one-hour dramatization, based on the novel by H. G. Wells.
Written by Howard Koch.
Produced by Orson Welles and John Houseman.
Broadcast from 8 – 9 p.m. (ET)
Announced by Dan Seymour.
Hosted by the radio series: The Mercury Theatre on the Air.
Narrated by Orson Welles.
Cast: Orson Welles, Frank Readick, Kenny Delmar, Ray Collins.