In 1929, two California eugenicists named Ezra Gosney and Paul Popenoe published a book calledย Sterilization for Human Betterment.ย It was a careful, data-rich account of California’s compulsory sterilization program: how many people had been processed, under what legal authority, with what results. Copies reached Germany, where officials in the emerging Nazi movement studied them closely. German…
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