3rd Anniversary, Paderewski's US Radio Debut

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The Magic Key of RCA was an American variety radio show that featured an unusually large and broad range of entertainment stars and other noted personalities. It was on the NBC Blue Network from September 29, 1935, until September 18, 1939.

Wikipedia. CC BY-SA 4.0. Updated Jun 1, 2026.

“3rd Anniversary, Paderewski's US Radio Debut.” The Magic Key. Radio broadcast, September 25, 1938.