In September 1955 , President Dwight D. Eisenhower suffered a serious heart attack during a vacation in Denver , Colorado .
In September 1955 , President Dwight D. Eisenhower was confined to a hospital room there until November .
In September 1955 , President Dwight D. Eisenhower suffered a serious heart attack during a vacation in Denver , Colorado and was confined to a hospital room there until November .