I have read most all of Jeff Shaara’s historical novels and his ability to use the medium to awaken history sets a high standard. ( search gordonsgoodreads).
His latest, THE OLD LION, is a great overview of Teddy Roosevelt’s lifetime. Unlike the great biographies by Edmund Morris or David McCullough THE OLD LION moves quickly through the highlights of TR’s career.

This book is a good choice for a first round study of TR from his sickly childhood to the Rough Riders charge up San Juan Hill. After retirement from the presidency Roosevelt’s epic adventurous trip on the headwaters of the Amazon are captured by Sharra.
Enjoy