Documents whose date range includes May 1920May 1, 1920May 2, 1920May 3, 1920May 4, 1920May 5, 1920May 6, 1920May 7, 1920May 8, 1920May 9, 1920May 10, 1920May 11, 1920May 12, 1920May 13, 1920May 14, 1920May 15, 1920May 17, 1920May 18, 1920May 19, 1920May 20, 1920May 21, 1920May 22, 1920May 23, 1920May 24, 1920May 25, 1920May 26, 1920May 27, 1920May 28, 1920May 29, 1920May 31, 1920