Howard P. Chudacoff, the George L. Littlefield Professor of American History and Professor of Urban Studies at Brown University, was born in Omaha, Nebraska. He earned his A.B. (1965) and Ph.D. (1969) from the University of Chicago. He has written MOBILE AMERICANS (1972), HOW OLD ARE YOU (1989), THE AGE OF THE BACHELOR (1999), THE EVOLUTION OF AMERICAN URBAN SOCIETY (with Judith Smith, 2004), and CHILDREN AT PLAY: AN AMERICAN HISTORY (2007). He has also co-edited, with Peter Baldwin, MAJOR PROBLEMS IN AMERICAN URBAN HISTORY (2004). His articles have appeared in such journals as the JOURNAL OF