AM Stereo System, Circa 1941

Here is an interesting 1941 magazine article describing an early proposal for broadcasting stereo on a single channel in the AM broadcast band.

1st page of 1941 Article

2nd page of 1941 Article

3rd page of 1941 Article

I would like to hear from anyone that may have information on other early proposals for stereo broadcasting, especially prior to WW2.

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