is a historian and director of the Graduate School of Arts & Sciences Teaching Center at Columbia University. He is the author of 13 books, including Huck's Raft: A History of American Childhood
and Domestic Revolutions: A Social History of American Family Life
. The past president of the Society for the History of Children and Youth, he has also chaired the Council on Contemporary Families and served as president of H-Net: Humanities and Social Sciences Online.