This document summarizes the contributions of several prominent proponents of free market economics, including: - Irving Fisher, an early American neoclassical economist who made important contributions to utility theory, interest rates, macroeconomics, and econometrics. - Simon Kuznets, an economist who developed methods for calculating national income and its changes, and helped establish economics as an empirical science. - Milton Friedman, an influential 20th century American economist who advocated for free market policies and spent over 30 years teaching at the University of Chicago. - Gary Becker, a Nobel Prize winning economist who made contributions to family economics and analyzing human behavior as both rational and utility maximizing.