What was the 1926 exposition commemorating 150 years of American independence called?

The 1926 exposition commemorating 150 years of American independence was called the Sesqui-Centennial International Exposition.

The world's fair was held in Philadelphia and celebrated the 150th anniversary of the signing and adoption of the Declaration of Independence. Its name used “sesquicentennial,” a term meaning a 150th anniversary.

The exposition also marked the 50th anniversary of Philadelphia's 1876 Centennial Exposition. That connection made the city a recurring center for national anniversary observances, a tradition that later continued with planning for the 2026 America250 celebrations.

The event opened in 1926 during the presidency of Calvin Coolidge. It is sometimes shortened to the Sesquicentennial Exposition, but the fuller historical name is Sesqui-Centennial International Exposition of 1926.