Columbia subject headings:
Mary, Queen of Scots, 1542-1587.
Shakespeare, William, 1564-1616.
Shakespeare, William, 1564-1616. King Lear.
Shakespeare, William, 1564-1616. Macbeth.
Harvard subject headings:
Mary, Queen of Scots, 1542-1587
Shakespeare, William, 1564-1616
Shakespeare, William, 1564-1616. King Lear
Shakespeare, William, 1564-1616. Macbeth
Princeton subject headings: