When historian Marni Sandweiss discovered an 1868 photograph of six prominent Civil War generals standing around an unnamed Indigenous girl, she couldn't let go of one haunting question: Who was she? In this episode, Princeton University Professor Emerita Martha "Marni" Sandweiss shares how she identified the child as Sophie Mousseau and uncovered a remarkable story of survival, identity, and resilience spanning generations on the Northern Plains. Through meticulous research combining written records, oral histories, and collaboration with Sophie's descendants, Marni reveals how one photograph connects to broader themes of mixed-race identity, territorial boundaries, and the power of naming the unnamed in history. Discover how this truffle-hunting historian transformed an anonymous face into a fully realized person whose story matters—and why every name in your family photographs deserves to be remembered.

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