Columbia subject headings:
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Oswald, Lee Harvey.
Ruby, Jack.
Harvard subject headings:
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Oswald, Lee Harvey
Ruby, Jack
Princeton subject headings:
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Oswald, Lee Harvey.
United States. Warren Commission