Theodore Roosevelt Aptly described by a contemporary observer as “a steam engine in trousers,” Theodore Roosevelt, at forty-two, was the youngest president ever to occupy the White House. He brought to the office energy, intellect, and activism in equal measure. Roosevelt boasted that he used the presidency as a “bully pulpit”—a forum from which he advocated reforms ranging from trust-busting to conservation.

Library of Congress, LC-DIG-ppmsca-37304.