1769 King George III ratified the Mason-Dixon boundary between Pennsylvania and Maryland, long disputed between Lord Baltimore and William Penn.
1799 The General Assembly passed a law to prevent swine from running loose in the village of Laurel.
1920 Redman's Hall in Claymont hosted its first Catholic Parish Mass.
1944 Fourteen Delaware women helped in the war effort by driving Wilmington's Delaware Coach Company busses.
Today's facts were compiled by historian Roger Martin and brought to you by the Delaware Public Archives.