Les Miserables (1937) was Orson Welles' first radio series. He served as actor, director, producer, and adaptor, developing narrative and audio techniques that would later be used for The Mercury Theatre on the Air.
The episodes are:
The Bishop 7/23/37
Javert 7/30/37
The Trial 8/6/37
Cosette 8/13/37
The Grave 8/20/37
The Barricade 8/27/37
Conclusion 9/3/37