Huthmacher, J. Joseph. Twentieth-century America; : an interpretation with readings, [electronic resource] / by J. Joseph Huthmacher.. — Boston, : Allyn and Bacon,, 1966.. — xiv, 578 p. 22 cm. Bibliographical footnotes. LCCN: 66012318 Subjects--Geographic Terms: United States--History--20th century. LC Class. No.: E742 / .H9 Dewey Class. No.: 973