NOTE.—Contains on reverse, Prevailing direction of wind on Great Lakes during October, with percentages, 1900-09.—Approximate location of submarine signal bell stations, Mar. 1911.—Distribution of radio [or] wireless stations on Great Lakes, and call letters for each.—Total amount of snow in inches, unmelted, during Oct. 1900-11.— Highest velocity of wind, direction, and date of occurrence, during Oct. 1900-11.