Webb, Walter Prescott, 1888-1963. The Great Plains, [electronic resource] / by Walter Prescott Webb.. — [Boston] : Ginn and company, [c1931]. — xv, 345, [2], 346-525 p. : illus., plate, ports., double maps, diagrs. 22 cm.
Bibliography at end of each chapter except the first.
Microfilm. Washington, D.C., Library of Congress.
31020202 //r902
Great Plains--History. Mississippi River Valley--History.