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Dorothea Dix
Dorothea Lynde Dix (April 4, 1802 – July 17, 1887) was an American advocate on behalf of the indigent mentally ill who, through a vigorous and sustained program of lobbying state legislatures and the United States Congress, created the first generation of American mental asylums. During the Civil War, she served as a Superintendent of Army Nurses.
Source: Wikipedia