The 1876 Centennial Exposition, held in Philadelphia, PA, was the country's first official World's Fair. The Illinois State Head Quarters building, which represented the state at the Centennial, is pictured.
The Pan-American Exposition was a World's Fair event held in Buffalo, N.Y. at the turn of the twentieth century. The fair is most famous for being the last location that U.S. President William McKinley spoke on September 5, 1901. He was shot theā¦