Dolores Kelley O'Brien (born 1923)

In 1923, in the year that Dolores Kelley O'Brien was born, on August 2, President Warren G. Harding died in office, apparently of a heart attack. He was staying at the Palace Hotel in San Francisco after completing a nationwide tour. Suffering from cramps, indigestion, a fever and shortness of breath, his doctor thought he had food poisoning. After several days of being ill, he suddenly shuddered, slumped over, and died. There were rumors of foul play (some thought that his wife had poisoned him because of his affairs) but no evidence has ever been found.

In 1953, on January 20th, Dwight D. Eisenhower became the 34th President of the United States. Formerly the 1st Supreme Allied Commander Europe in World War II, Eisenhower had never previously held a political office.

In 1967, between June 5th and 10th, Israeli and Egypt, Jordan, and Syria fought what came to be called the "Six-Day War". The hostilities began when Israel launched "preemptive" strikes against Egypt, destroying nearly its entire air force. It ended with Israel occupying the Sinai Peninsula, Golan Heights, Gaza Strip and West Bank.

In 1971, in March, Intel shipped the first microprocessor to Busicom, a Japanese manufacturer of calculators. The microprocessor has since allowed computers to become smaller and faster, leading to smaller and more versatile handheld devices, home computers, and supercomputers.

In 1988, on December 21st, Pan Am Flight 103 exploded over Lockerbie Scotland. The explosion killed all 259 people on board and another 11 on the ground. The flight had left Heathrow Airport in London less than an hour before, on its way to New York. After an exhaustive (and long) investigation it came to be believed that two individuals from Libya had planted the bomb.