Columbia subject headings:
Harvard subject headings:
Parsons, Charles A.
Spies--Biography.
World War, 1939-1945--Secret service--Philippines.
World War, 1939-1945--Secret service--United States.
Princeton subject headings:
Parsons, Charles A.
Spies--Biography.
World War, 1939-1945--Secret service--Philippines.
World War, 1939-1945--Secret service--United States.