This was a great book that focuses on these 4 Presidents and how they came to be and worked in their administrations during turbulent times. Each President gets a couple small chapters on their early life and their rise to power. The book is closed with topic sub-chapters that show how one of the Presidents did to overcome.

It's a pretty thick book. While reading, the early pages were slow going, and not very turbulent. That picked up. I found the lookback and analysis the author did to be of top notch and well done.