1. When Trumpets Call: Theodore Roosevelt After the White House.;O'Toole,2005
2. River of Doubt: Theodore Roosevelt's Darkest Journey.;Millard,2005
3. Mornings on Horseback.;McCullough,1981
4. Bamie: Theodore Roosevelt's Remarkable Sister.;Rixey,1963
5. Theodore Roosevelt: A Strenuous Life.;Dalton,2002