Brian Domitrovic is Assistant Professor of History at Sam Houston State University and author of the history of supply-side economics, Econoclasts (2009). He writes the “Past & Present” column at forbes.com.bfd001@shsu.edu

Otis L. Graham Jr. is Professor Emeritus of History at UCSB, and Visiting Scholar at UNC Chapel Hill. He is a graduate of Yale University (B.A., 1957) and Columbia University (Ph.D., 1966), and served as an artillery officer in the U.S. Marine Corps. He is the author or editor of nineteen books and numerous articles on the history of the United States, especially on American reform movements, political economy, and environment and immigration. He has been named a Guggenheim Fellow, a Fellow at the Woodrow Wilson Center for Scholars, the National Endowment for the Humanities, and the Center for Advanced Study and Behavioral Sciences, and received the Robert Kelley Memorial Award from the National Council on Public History.graham@history.ucsb.edu

Daniel Henstra is Assistant Professor of Public Administration and Local Government in the Department of Political Science at the University of Windsor. His research on public policy, particularly in the field of emergency management, has been published in journals such as Public Administration Review, Canadian Public Administration, and Canadian Public Policy.dhenstra@uwindsor.ca

Stephen Macekura is a Ph.D. candidate in American history at the University of Virginia. His scholarly work focuses on twentieth-century American foreign relations, global environmental history, and human rights.Sjm4u@virginia.edu

Joan Malczewski is Assistant Professor of History and Social Studies in the Department of Humanities and the Social Sciences in the Professions at the Steinhardt School of Culture, Education and Human Development, New York University.jm186@nyu.edu

Iwan Morgan is Professor of U.S. Studies and Head of U.S. Programs at the Institute for the Study of the Americas (ISA) at the University of London, School of Advanced Studies. He has published widely in various fields of modern U.S. political history and in political economy. He is director of ISA’s newly established United States Presidential Centre, chair of the executive committee of the Historians of the Twentieth Century United States, and a member of the executive committee of the British Association of American Studies. His Age of Deficits won the American Politics Group’s 2010 Richard Neustadt Book Prize.iwan.morgan@sas.ac.uk

Peter A. Shulman, Assistant Professor of History at Case Western Reserve University, received his Ph.D. in 2007 from the Massachusetts Institute of Technology. He studies technology, science, and American politics in the nineteenth and twentieth centuries with special interests in the history of energy and environmental history. He is completing a book on energy, steam power, and American foreign relations between 1840 and 1940.peter.shulman@case.edu

Michael J. Yochim is the author of Yellowstone and the Snowmobile: Locking Horns over National Park Use (University Press of Kansas, 2009). Trained in geography at the University of Wisconsin–Madison, most of his research involves national park policymaking. He is a Senior Interdisciplinary Project Manager for the National Park Service in Yosemite National Park.mjyochim@uwalumni.com