Theodore Roosevelt was the 26th President of the United States, a historian, author, naturalist and explorer. He wrote 35 books including works on outdoor life, natural history, U.S. Western and political history, an autobiography and other topics.Based in part on his own writings An Autobiography of Theodore Roosevelt is the true story about one of America's most colorful leaders. From president of the board of New York City Police Commissioners, secretary of the Navy, founder of the Rough Riders during the Spanish-American War, his time as the governor of New York, to vice president and eventually, after the assignation of President McKinley, becoming the twenty-sixth president of the United States, Theodore Roosevelt's role in the shaping of the United States is still felt today.