Columbia subject headings:
United States--History--1919-1933.
United States--History--1933-1945.
World War, 1939-1945--United States.
Harvard subject headings:
United States--History--1919-1933.
United States--History--1933-1945.
World War, 1939-1945--United States.
Princeton subject headings:
United States--History--1919-1933.
United States--History--1933-1945.
World War, 1939-1945--United States.