Theodore Roosevelt was active.
Mount Rushmore . Mount Rushmore features 60 ft sculptures of the heads of four United States presidents : George Washington ( 1732 -- 1799 ) , Thomas Jefferson ( 1743 -- 1826 ) , Theodore Roosevelt ( 1858 -- 1919 ) , and Abraham Lincoln ( 1809 -- 1865 ) . Theodore Roosevelt . He also served as the 25th Vice President of the United States and as the 33rd Governor of New York . Following McKinley 's assassination in September 1901 , Roosevelt became president at age 42 , and remains the youngest president . His successful efforts to broker the end of the Russo-Japanese War won him the 1906 Nobel Peace Prize .