Documents whose date range includes May 1820May 1, 1820May 2, 1820May 3, 1820May 4, 1820May 6, 1820May 10, 1820May 11, 1820May 12, 1820May 13, 1820May 14, 1820May 15, 1820May 16, 1820May 17, 1820May 18, 1820May 20, 1820May 22, 1820May 26, 1820May 27, 1820May 28, 1820May 30, 1820May 31, 1820 