Horace Mann School, undated postcard. The elite prep school, Horace Mann was first established in 1887 as an experimental co-educational institution of Teachers College at Columbia. Originally located in Greenwich Village, the school moved to the Columbia Campus in Morningside Heights in 1894, sharing a building with Teachers College. In 1901, they moved into their own building nearby. Horace Mann became independent of the university in the 1940s. The education of male and female students separated in the early 20th century, with the all-boys facility moving to the Bronx in 1914. (The girls' school remained at Teachers College, merging with a new school before closing in 1946). The new campus in the Bronx, seen here, overlooked Van Cortlandt Park. Over the second half of the 20th century a number of new buildings were added to the campus and in 1975 the school once again became co-educational. Famous alumni of Horace Man include Seymour Durst, real estate developer; Beat writer Jack Kerouac; illustrator Rockwell Kent; and Arthur Hays Sulzberger, publisher of The New York Times among other well-known artists, actors, scientists, and politicians.