 ****SOURCE UNKNOWN-- THE THREE SUBMERGED CRIBS AT LAT. 41/41/49.01N, LONG. 87/30/09.23W, LAT. 41/41/47.7N, LONG. 87/30/07.38W AND LAT. 41/41/49.2N, LONG. 87/30/08.12W WAS APPLIED BEFORE 1972 TO THE LAKE SURVEY CHART BEFORE NOS TOOK OVER THE CHART. (ENTE