"The Robber Barons" is a historical book written by Matthew Josephson that provides a critical examination of the powerful industrialists and business magnates of the late 19th and early 20th centuries in the United States. The term "Robber Barons" refers to these wealthy and influential individuals who were accused of exploiting workers, engaging in unethical business practices, and amassing vast fortunes during the Gilded Age. The book delves into the lives and business practices of notable figures such as John D. Rockefeller, Andrew Carnegie, J.P. Morgan, and others, exploring their rise to power, consolidation of wealth, and impact on American society. Josephson's narrative sheds light on the economic and social transformations of the time, as well as the controversies surrounding the industrial titans.