* {{cite book |last=Brands |first=H. W. |authorlink=H. W. Brands |title=T. R.: The Last Romantic |year=1997 |publisher=Basic Books |location=New York |url=http://www.questia.com/library/book/t-r-the-last-romantic-by-h-w-brands.jsp |isbn=978-0-465-06959-0}}
* {{cite book |last=Brinkley |first=Alan |authorlink=Alan Brinkley |title=American History: A Survey |publisher=McGraw-Hill |year=2007 |edition=12 |isbn=978-0-07-312492-6}}
* {{cite book |last=Gould |first=Lewis L. |title=The Presidency of Theodore Roosevelt |publisher=University Press of Kansas |year=1992 |isbn=978-0-7006-0565-1}}
* {{cite book |last=Harbaugh |first=William Henry |title=The Life and Times of Theodore Roosevelt |year=1961 |publisher=Farrar, Straus And Cudahy |location=New York |edition=1 |url=http://www.archive.org/details/powerandresponsi012652mbp |isbn=978-0-19-519822-5}}
* {{cite book |last=Morris |first=Edmund |authorlink=Edmund Morris (penulis) |title=Theodore Rex |publisher=Random House |edition=1 |year=2001 |isbn=978-0-394-55509-6}}
* {{cite book |last=Mowry |first=George E. |title=The Era of Theodore Roosevelt and the Birth of Modern America, 1900-1912 |publisher=Harper Torchbooks |location=New York and Evanston |year=1958 |edition=1 |url=http://www.archive.org/details/eraoftheodoreroo010861mbp |isbn=978-0-06-133022-3}}
* {{cite book |last=Rhodes |first=James |authorlink=James Ford Rhodes |title=The McKinley and Roosevelt Administrations, 1897-1909 |year=1922 |publisher=The MacMillan Company |location=New York |url=http://www.questia.com/PM.qst?a=o&d=6404794 |isbn=978-1-4067-3464-5}}
