- J-Class yachts.1
- Jacobs, Helen.1
- Jellicoe, John Rushworth Jellicoe, Earl, 1859-1935.1
- Joan, of Arc, Saint, 1412-1431--Influence.1
- Jones, H. Spencer (Harold Spencer), 1890-1960.1
- Journalism.1
- King, William Lyon Mackenzie, 1874-1950.1
- Kings and rulers--Abdication.1
- Kings, queens, rulers, etc.1
- Labour Party (Great Britain)1
- Lane, William Arbuthnot, 1856-1943.1
- Lansbury, George, 1859-1940.1
- Law enforcement.1
- League of Nations.1
- Lebrun, Albert, 1871-1950.1
- Lee, Jennie, 1904-1
- Leg.1
- Leigh-Mallory, Trafford, Sir, 1892-1944.1
- Lion.1
- Lloyd George, David, 1863-1945.1