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The Harlan Hahn collection consists of manuscripts, research notes, correspondence, articles, pamphlets, research papers, reports, photographs, published and other material focusing on Hahn’s life, family, education, and career. Hahn, who was a professor of political science, psychiatry, and behavioral science at the University of Southern California, focused his research on American and urban politics; health; and disability politics and policy. Also included in this collection are newspaper clippings, correspondence, treatment plans, informational pamphlets, and other material relating to Harlan’s battle with polio.