TY - BOOK AU - Burgan, Michael TI - Who was Theodore Roosevelt? SN - 978-0-448-47945-3 PY - 2014///] CY - New York PB - Penguin Group KW - Roosevelt, Theodore, -- 1858-1919 -- Juvenile literature. Presidents -- United States -- Biography -- Juvenile literature. Roosevelt, Theodore, -- 1858-1919 N2 - He was only 42 years old when he was sworn in as President of the United States in 1901, making him the youngest president ever. But did you know that he was also the first sitting president to win the Nobel Peace Prize? The first to ride in a car? The ER -