Hilary Ballon is an architectural historian and professor at Columbia University. She is the curator of “Robert Moses and the Modern City,” the 2007 exhibition concurrently at the Queens Museum of Art, the Museum of the City of New York, and the Miriam and Ira D. Wallach Art Gallery of Columbia University. She is the editor of the Journal of the Society of Architectural Historians. Her previous books include New York’s Pennsylvania Stations; The Paris of Henri IV: Architecture and Urbanism, which won the Alice Davis Hitchcock Award for the Most Distinguished Scholarship in the History of Architecture; and Louis Le Vau: Mazarin’s College, Colbert’s Revenge, which received a medal from the Académie Française.