Cast: Orson Welles (producer, director, host, performer: Professor Richard Pierson), Dan Seymour (announcer), Paul Stewart (associate producer, adaptor, performer: Studio announcer, Third Studio Announcer), Frank Readick (Reporter Carl Phillips, Radio operator 2X2L), Kenny Delmar (Policeman at farm, Captain Lansing, Secretary of the Interior, Bayonne radio operator), Ray Collins (Farmer Wilmuth, Harry McDonald the radio VP, Rooftop radio announcer), Carl Frank (Second studio announcer, Fascist stranger), Richard Wilson (Brig. General Montgomery Smith, Officer 22nd Field Artillery, Langham Field), William Alland (Meridian room announcer, Field artillery gunner), Stefan Schnabel (Field artillery observer), William Herz (Newark radio operator, Radio operator 8X3R), Howard Smith (Bomber Lt. Voght), Bernard Herrmann (composer, conductor), John Houseman (producer, adaptor, script editor), Howard Koch (adaptor), Davidson Taylor (production supervisor), Ora Nichols (sound effects), Ray Kremer (sound effects), Jim Rogan (sound effects), John Dietz (sound engineer).
The Mercury Theatre on the Air is a radio series of live radio dramas created and hosted by Orson Welles. The weekly hour-long show presented classic literary works performed by Welles's celebrated Mercury Theatre repertory company, with music composed or arranged by Bernard Herrmann. The series began July 11, 1938, as a sustaining program on the CBS Radio network, airing Mondays at 9 pm ET. On September 11, the show moved to Sundays at 8 pm.
The show made headlines with its "The War of the Worlds" broadcast on October 30, one of the most famous broadcasts in the history of radio due to the panic it allegedly caused, after which the Campbell Soup Company signed on as sponsor. The Mercury Theatre on the Air made its last broadcast on December 4 of that year, and The Campbell Playhouse began five days later, on December 9.