sentences:  In 1935, Mayor Edward Joseph Kelly explored the idea of a permanent fair in the park.The state passed a bill creating the Metropolitan Fair and Exposition Authority and allowed construction of Meigs Field, after Northerly Island lost out as the site for the United Nations.In 1948, Burnham Park hosted the Chicago Railroad Fair, proving the location's viability for conventions, which eventually led to the construction of the first McCormick Place in 1960.