. "They amassed over 15,000 items, including 2,200 books, newspaper articles, pamphlets and monographs of political materials written between 1760-1805 and discovered that the three writers the constitutional framers quoted from the most often were: 1) Barron Montesquieu (1689-1755), 2) William Blackstone (1723-80), and 3) John Locke (1632-1704)." . . . .