“Susan, Linda, Nina & Cokie: The Extraordinary Story of the Founding Mothers of NPR” is coming out to coincide with the fiftieth anniversary of NPR’s “All Things Considered.” Author Lisa Napoli joins Brian Stelter to discuss the public radio network’s experimental beginnings, as seen through the experiences of the four "founding mothers" — Susan Stamberg, Linda Wertheimer, Nina Totenberg and Cokie Roberts. What lessons can be gleaned from NPR's origin story, especially for newsrooms looking to improve how they represent the communities they cover?

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