Will Obama be the first US President to visit Cuba since

Calvin Coolidge?
http://abcnews.go.com/International/happened-time-us-president-visited-cuba/story?id=27689730
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Exclusive: Obama Doesn't Rule Out Presidential Visit to Cuba: ‘Let’s See’

The world was a different place.

The Holland Tunnel opened only two months earlier under the Hudson River, linking New Jersey with New York City, and the first air-conditioned office building opened in San Antonio. Prohibition was still intact.

Coolidge traveled to Cuba to address the Sixth Annual International Conference of American States in Havana on Jan. 16, 1928. Coolidge and his wife met with Cuba's President Gerardo Machado, who was in office from 1925 to 1933 until he was forced into exile.

Cuba was the only foreign country Coolidge visited while in the White House, and he was the only sitting president to visit Cuba, according to the Calvin Coolidge Presidential Foundation. At the time, Benito Mussolini ruled Italy. Months before Coolidge's visit to Cuba, Leon Trotsky was expelled from the Soviet Communist Party, leaving Joseph Stalin in control. About a month after that, Iraq began negotiating independence from Britain.