HUMPHREYS, Margaret. Also writes as Margaret Warner. American, b. 1955. Genres: History. Career: Harvard University, Cambridge, MA, instructor, 1983-84, lecturer, 1986-93, Fae Kass Lecturer, 1987; Duke University, Durham, NC, assistant professor of history and medicine, and physician (internal medicine) at university medical center, both 1993-. Francis Wood Institute, editorial consultant, 1993-. Publications: Yellow Fever and the South, 1992. Contributor to history journals, sometimes under the name Margaret Warner. Address: Department of History, Box 90719, Duke University, Durham, NC 27710, U.S.A.