
Production
Pierre Spengler (born 5 June 1947) is a French film producer. He initiated the first three Superman films starring Christopher Reeve and produced them with Alexander and Ilya Salkind.
Description above from the Wikipedia article Pierre Spengler, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Super/Man: The Christopher Reeve Story
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Hollywood Banker
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You Will Believe: The Cinematic Saga of Superman
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Shooting Days: Emir Kusturica Directs Underground
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Underground
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The Making of 'Superman II'
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The Making of 'Superman: The Movie'
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