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Rainbows End

The show was said to be the first episode in the series that aired on the Mutual network, yet the recordings still contain audio markers from the ABC system.

Challenge of the Yukon is an American radio adventure series that began on Detroit's WXYZ and is an example of a Northern genre story. The series was first heard on January 3, 1939. The title changed from Challenge of the Yukon to Sergeant Preston of the Yukon in September 1950, and that title was retained through the end of the series and into a television adaptation.

Wikipedia. CC BY-SA 4.0. Updated Jul 26, 2026.

“Rainbows End.” Challenge of the Yukon. Radio broadcast, January 2, 1950.

Sound Recording A40m46s

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Sound Recording B29m17s

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Sound Recording C40m46s

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Sound Recording D40m46s

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