"Illiberal Reformers: Race, Eugenics, and American Economics in the Progressive Era" by Thomas C. Leonard is a textbook that delves into the intersection of science, business, history, and political science during the Progressive Era in the United States. The book explores how ideas about race and eugenics shaped economic policies and ideologies during this time period, shedding light on the complex relationships between science, politics, and society. Published by Princeton University Press in 2016, this hardcover book spans 250 pages and is written in English, making it a valuable resource for students and scholars interested in American history and economic policy.