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In 1892, he returned to the United States to create two large sculptural groups representing "The Genius of Navigation" for the World's Columbian Exposition in Chicago. He also produced sculptures for the Pan-American Exposition at Buffalo in 1901. In 1893, he began a 25-year career as an influential teacher of modeling in the School of the Museum of Fine Arts, Boston. One of Pratt's most famous students at the School was John A. Wilson. During this time, Pratt sculpted a series of busts of Boston's intellectual community, including Episcopal minister Phillips Brooks (1899, Brooks House, Harvard University), Colonel Henry Lee (1902, Memorial Hall, Harvard University), and Boston Symphony Orchestra founder Henry Lee Higginson (1909, Symphony Hall, Boston). He became an associate of the National Academy in 1900. (1)