Jordan, Winthrop D. The United States : conquering a continent : volume 1 / Winthrop D. Jordan, Leon F. Litwack - 7th ed. - Englewood Cliffs , N.J. : Prentice Hall , c1991 - xiv , 444p . ; 27cm. ISBN: 0139335161 Subjects--Geographic Terms: United States--History Dewey Class. No.: 973 / JOR