River of the Gods: Genius, Courage, and Betrayal in the Search for the Source of the Nile (Unabridged)
2022
The River of Doubt: Theodore Roosevelt's Darkest Journey (Unabridged)
2005
The Highest Calling (Unabridged)
2024
Hero of the Empire
2017
Destiny of the Republic: A Tale of Madness, Medicine and the Murder of a President (Unabridged)
2011
The River of Doubt: Theodore Roosevelt's Darkest Journey (Abridged)
2005