"Why Wall Street Matters" by William D. Cohan is a 2017 hardcover book that delves into the world of finance, economics, and politics. Published by Random House Publishing Group, this book explores topics such as banking, political economy, and investments. With a focus on the United States, Cohan provides insight into the inner workings of Wall Street and its impact on the country. At 192 pages long, this book is a valuable resource for those interested in the complex relationship between money, power, and politics in American society.