Hero of the Empire: The Boer War, a Daring Escape, and the Making of Winston Churchill

River of the Gods: Genius, Courage, and Betrayal in the Search for the Source of the Nile

Destiny of the Republic: A Tale of Madness, Medicine and the Murder of a President

The River of Doubt: Theodore Roosevelt's Darkest Journey

The River of Doubt: Theodore Roosevelt's Darkest Journey