On December 7:
521 Saint Columba, Irish Christian missionary to Scotland, was born.
1863 Richard Sears, American department store founder, was born.
1888 Joyce Cary, Irish author, was born.
1921 Pramukh Swami Maharaj, Indian spiritual leader, was born.
1923 Ted Knight, American actor, was born.
1928 Noam Chomsky, American linguist and political writer was born.
1930 W1XAV in Boston, Massachusetts broadcast video from the CBS radio orchestra program, The Fox Trappers. The broadcast included the first television commercial in the United States, an advertisement for I.J. Fox Furriers, who sponsored the radio show.
1941 Attack on Pearl Harbor – The Imperial Japanese Navy attacked the US Pacific Fleet and its defending Army Air Forces and Marine air forces at Pearl Harbor, Hawaii. Because of the time difference due to the International Date Line, the events of December 8 occurred while the date was still December 7 to the east of this line.
1963 The Bassett Road machine gun murders took place.
1970 The first ever general election on the basis of direct adult franchise was held in Pakistan for 313 National Assembly seats.
Sourced from NZ History Online & Wikipedia.