Fields, Barbara Jeane Slavery and freedom on the middle ground : Maryland during the nineteenth century / Barbara Jeanne Fields. - New Haven ; London : Yale University Press, c1985. - xv,268p. : 1map ; 24cm. - Yale historical publications. Miscellany ; 123 . ISBN: 0300023405 : No price Subjects--Topical Terms: Slavery--History--Maryland--19th century.African Americans--Economic conditions.--Maryland Subjects--Geographic Terms: Maryland--Race relations. Subjects--Index Terms: Nô lệ Người Mỹ gốc Phi Thế kỷ 19 Lịch sử Mỹ Dewey Class. No.: 975.2/004962023 / FIE 1984