Columbia subject headings:
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Lincoln, Abraham, 1809-1865--Assassination.
Harvard subject headings:
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Lincoln, Abraham, 1809-1865--Assassination.
Princeton subject headings:
Kennedy, John F. (John Fitzgerald), 1917-1963--Assassination.
Lincoln, Abraham, 1809-1865--Assassination.