It's a bird! It's a plane! It's a complete Superman radio adventure from March 7, 1949!

It's a bird! It's a plane! It's six exciting episodes of The Adventures of Superman! In this exciting serial, which aired from March 4 to 15, 1940, Superman cracks the case of the North Star Mine swindle. Clayton "Bud" Collyer plays the dual roles of Superman and Clark Kent, as he did for more than 2,000 episodes.

It's a bird! It's a plane! It's six exciting episodes of The Adventures of Superman! In this action-packed serial, which aired from April 3 to 12, 1940, Superman is faced with the mystery of a missing explorer - and an even more mysterious sacred emerald of the Incas. Does the jewel hold the power to save the human race?

It's a bird! It's a plane! It's six exciting episodes of The Adventures of Superman! In this thrill-packed serial, which aired from March 18 to 29, 1940, arch-villains the Wolf and Keno escape from prison; the Yellow Mask resurfaces; Lois Lane is in peril; and an entire town must be saved. Will Superman get there in time?

It's a bird! It's a plane! It's the premiere episodes of The Adventures of Superman! Debuting on March 12, 1940, the exciting radio serial was an instant hit. Starring Clayton "Bud" Collyer in the dual roles of Superman and Clark Kent, this initial nine-episode sequence tells the story of the destruction of Krypton and the Man of Steel's arrival on Earth.