www.cato.org (The Cato Institute)

www.atlas-fdn.org (Atlas Economics Research Foundation)

www.cei.org (The Competitive Enterprise Institute)

www.fee.org (Foundation for Economic Education)

www.pioneerinstitute.org (The Pioneer Institute for Public Policy Research)

www.mackinac.org (Mackinac Center for Public Policy)

www.instituteforjustice.org (Institute for Justice –legal issues)

www.iea.org.uk (Institute of Economics Affairs – Europe)

www.i2i.org (Independence Institute)

www.cse.org (Citizens for a Sound Economy)

www.iret.org (Institute for the Research on the Economics of Taxation)

www.perc.org (Political Economy Research Center – environmental issues)

www.free-eco.org (Foundation for Research on Economics and the Environment)

www.pacificresearch.org (Pacific Research Institute for Public Policy)