Robert Higgs is Retired Senior Fellow in Political Economy, Founding Editor and former Editor at Large of the Independent Institute's quarterly journal The Independent Review: A Journal of Political Economy. He received his Ph.D. in economics from Johns Hopkins University, and he has taught at the University of Washington, Lafayette College, Seattle University, the University of Economics, Prague, and George Mason University. He has been a visiting scholar at Oxford University and Stanford University, and a fellow for the Hoover Institution and the National Science Foundation. His many books include Crisis and Leviathan; Depression, War, and Cold War; After Leviathan; Delusions of Power; Neither Liberty Nor Safety; Resurgence of the Warfare State; Taking a Stand; and multiple edited collections.

Joel J. Nobel, M.D. (1934?2014) was Founder and President Emeritus of ECRI Institute, a U.S.-based, nonprofit, nongovernmental organization engaged in health services research.