Columbia subject headings:
Barcelona (Spain)--History--Sources.
Public opinion--United States--History--20th century--Sources.
Spain--History--Civil War, 1936-1939--Diplomatic history--Sources.
Spain--History--Civil War, 1936-1939--Foreign public opinion, American--Sources.
Spain--History--Civil War, 1936-1939--Sources.
Harvard subject headings:
Barcelona (Spain)--History--Sources.
Public opinion--United States--History--20th century--Sources.
Spain--History--Civil War, 1936-1939--Diplomatic history--Sources.
Spain--History--Civil War, 1936-1939--Foreign public opinion, American--Sources.
Spain--History--Civil War, 1936-1939--Sources.
Princeton subject headings:
Barcelona (Spain)--History--Sources.
Public opinion--United States--History--20th century--Sources.
Spain--History--Civil War, 1936-1939--Diplomatic history--Sources.
Spain--History--Civil War, 1936-1939--Foreign public opinion, American--Sources.
Spain--History--Civil War, 1936-1939--Sources.