This is a photograph of President Theodore Roosevelt sitting at his desk in 1904. A former governor of New York, Roosevelt became president upon the assassination of President William McKinley on September 14, 1901 and served until March 4, 1909. President Roosevelt is credited with officially changing the name of the President's House to what is was popularly and commonly referred to at the time, the White House. Roosevelt's presidential letterhead read "Executive Mansion" before switching later to "The White House," after Roosevelt changed the name.