This book would not have been written without support from numerous scholars, colleagues, friends, and family members. I appreciate advice from colleagues at the University of Massachusetts Amherst, including Evan MacCarthy, Ernest May, Marianna Ritchey, Emiliano Ricciardi, Jason Hooper, Brent Auerbach, Gary Karpinski, Chris White, and Salvatore Macchia, some of whom listened to presentations or read chapter drafts. I am also thankful for encouragement from George Barth, Karol Berger, Anna Maria Busse Berger, Sandra Graham, Tom Grey, Heather Hadlock, Stephen Hinton, and Christopher Reynolds. I am particularly indebted to my editor, Norman Hirschy, for his advice and counsel, and to my anonymous readers for their valuable suggestions.