On this day: July 20

POSTED: 07:48 AM PDT Jul 19, 2012    UPDATED: 11:00 PM PDT Jul 19, 2012 
Alexander the Great, 100 B.C. Roman mural

An ancient king is born, the first Ford rolls off the line, the Special Olympics are born, man lands on the moon, and a home run king belts his last, all on this day.