The Sistine Chapel's ceiling is unveiled, the National Weather Service makes its first forecast, the U.S. explodes its first hydrogen bomb, and Honda opens its first U.S. factory, all on this day.
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National Archives and Records Administration
1979: Former U.S. first lady Mamie Eisenhower, the widowed wife of President Dwight D. Eisenhower, dies at the age of 82 in Walter Reed Army Medical Center in Washington, D.C., where she had been hospitalized since suffering a stroke on Sept. 25, 1979.