Columbia subject headings:
Aline, Countess of Romanones, 1923-2017.
Spies--United States--Biography.
World War, 1939-1945--Secret service--Spain.
World War, 1939-1945--Secret service--United States.
Harvard subject headings:
Aline, Countess of Romanones, 1923-2017.
Espionage, American--Europe.
Spies--United States--Biography.
Windsor, Wallis Warfield, Duchess of, 1896-1986.
World War, 1939-1945--Secret service--Spain.
World War, 1939-1945--Secret service--United States.
Princeton subject headings:
Aline, Countess of Romanones, 1923-2017.
Spies--United States--Biography.
World War, 1939-1945--Secret service--Spain.
World War, 1939-1945--Secret service--United States.