Before revision: It was also largely used in the construction of the buildings of the World's Columbian Exposition at Chicago in 1893, at the Omaha and Buffalo Expositions in 1898 and 1901, and at later expositions and on temporary buildings of other kinds.
After revision: at the Louisiana Purchase Exposition in 1904,It was also largely used in the construction of the buildings of the World's Columbian Exposition at Chicago in 1893, at the Omaha and Buffalo Expositions in 1898 and 1901, and at later expositions and on temporary buildings of other kinds.