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What radio series inspired Robert Altman’s final film A Prairie Home Companion?

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Film director Robert Altman stands with arms crossed in a yellow jacket and white cap among crew and equipment on the set of Thieves Like Us. — Robert Altman Robert Altman.

Robert Altman’s final film, A Prairie Home Companion (2006), was based on the popular public-radio variety show of the same name created and hosted by Garrison Keillor.12