Which 1926 Philadelphia exposition is cited as a predecessor to America250?

The 1926 Philadelphia predecessor cited in connection with America250 is the Sesquicentennial Exposition.

Philadelphia hosted the exposition to commemorate 150 years since the Declaration of Independence. Its name comes from sesquicentennial, meaning a 150th anniversary. The event followed Philadelphia’s 1876 Centennial Exposition and preceded the nationwide Bicentennial observances of 1976.

These earlier celebrations provide historical context for America250. The 1926 event was not the 250th anniversary, and it should not be confused with the 1876 Centennial Exposition or the 1933–1934 Century of Progress exposition in Chicago. Each represented a different anniversary or civic theme.