Columbia subject headings:
Intelligence service--Cuba.
Intelligence service--Soviet Union.
Intelligence service--United States.
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Oswald, Lee Harvey.
Harvard subject headings:
Intelligence service--Cuba.
Intelligence service--Soviet Union.
Intelligence service--United States.
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Oswald, Lee Harvey
Princeton subject headings:
Intelligence service--Cuba.
Intelligence service--Soviet Union.
Intelligence service--United States.
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Oswald, Lee Harvey.