Columbia subject headings:
Political prisoners--United States.
Spies--Cuba.
Terrorism--Cuba--Prevention.
Harvard subject headings:
Political prisoners--United States.
Spies--Cuba.
Terrorism--Cuba--Prevention.
Princeton subject headings:
Cubans--United States--Biography.
Espionage, Cuban--United States--Biography.
Political prisoners--United States--Biography.
Prisoners, Foreign--United States--Biography.
Terrorism--Cuba--Prevention--Biography.