philip abbott is Distinguished University Professor at Wayne State University. His recent books include Accidental Presidents: Death, Assassination, Resignation, and Democratic Succession (2008) and Political Thought in America: Conversations and Debates, fourth edition (2010). aa2393@wayne.edu

peri e. arnold is a professor of political science at the University of Notre Dame. He is a scholar of American political development, the presidency, public administration, political organizations, and public policy. He is the author of Making the Managerial Presidency, which won the Louis Brownlow Award for 1987, and the author of Remaking the Presidency: Roosevelt, Taft, and Wilson, 1901–1916. He has edited or coedited three books and published numerous articles and book chapters. Arnold is a fellow of the National Academy of Public Administration. parnold@nd.edu

david fletcher is Senior Lecturer in the Faculty of Law, Governance, and International Relations at the London Metropolitan University. His research is on the history of cartography with special reference to government policy on mapping. As well as a book on estate maps, he has published papers on the Ordnance Survey, the emergence of parish boundary maps, and the development of the census in England. He is working on the mapping of royal forests. david.fletcher@londonmet.ac.uk

erik lindberg is an associate professor at the Department of History, Uppsala University. His current research focuses on the history of public goods and infrastructure, and gender and work from a historical perspective. erik.lindberg@hist.uu.se

james longhurst is an assistant professor of history at the University of Wisconsin, La Crosse. His monograph on the history of environmental politics and air pollution in Pittsburgh, Citizen Environmentalists, was published in 2010 by Tufts University Press. His current research centers on the history of bicycling and urban public policy. jlonghurst@uwlax.edu

patrik marier is Canada Research Chair in Comparative Public Policy at Concordia University. His research focuses primarily on the role of bureaucracy in developing and reforming the welfare state. His publications include articles in the American Journal of Political Science, Governance, Journal of European Public Policy, and West European Politics. marier.concordia@gmail.com

mark j. rozell is Acting Dean and Professor of Public Policy at George Mason University and coauthor with Mitchel A. Sollenberger of The President’s Czars: Undermining Congress and the Constitution (University Press of Kansas, 2012). mrozell@gmu.edu

mitchel a. sollenberger is an associate professor of political science at the University of Michigan–Dearborn and coauthor with Mark Rozell of The President’s Czars: Undermining Congress and the Constitution (University Press of Kansas, 2012). msollenb@umd.umich.edu

david torstensson was awarded his doctoral degree in American history from Oxford University in 2009. The title of his dissertation is “The Politics of Failure: Community Action and the Meaning of Great Society Liberalism.” dptorstensson@gmail.com