Dwight Eisenhower actually said...
Now, Therefore, I, Dwight D. Eisenhower, President of the United States of America, do hereby direct that the National Flag be displayed at half staff upon all the public buildings of the United States for thirty days; that the usual and appropriate civil, military, and naval honors be rendered to the memory of the late Chief Justice; and that on all the Embassies, Legations, and Consulates of the United States in foreign countries, the National Flag be flown at half staff for thirty days from the receipt of this proclamation.
09/08/1953