This book is a companion to my two previous works in this series on American leaders: Presidential Profiles (2008) and Vice Presidential Profiles (2013). It provides short biographies of the seventeen men who have served as Chief Justice of the United States Supreme Court. As such, they have had the unchecked power to invalidate laws of Congress and State governments as well as acts of Presidents. Because these men have always been largely removed from public view, and yet so important to the development of our country, I have called them our "hidden" leaders. In each biographical sketch, the reader will learn about the childhood, family life, educational background and career of the Chief Justice.