America's first library opens, a plane crash kills most of the Marshall University football team, Princess Anne marries a commoner, and Michael Jackson premieres his "Black or White" video, all on this day.
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Official Royal Family photo
1973: Britain's Princess Anne marries a commoner, Mark Phillips, then a lieutenant in the 1st Queen's Dragoon Guards, in London's Westminster Abbey. An estimated 500 million television viewers from around the world watched them marry. They would divorce in 1992, with Princess Anne re-marrying that same year.