Capt. James Cook discovered the Great Barrier Reef off Australia .
Sir Barton won the Belmont Stakes, becoming the first horse to capture the Triple Crown.
Vivian Malone and James Hood successfully enrolled at the University of Alabama following Gov. George Wallace’s famous "stand in the schoolhouse door."
Seattle Slew won the Belmont Stakes, capturing the Triple Crown.
Timothy McVeigh, the 1995 Oklahoma City bomber, was executed.
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