From history books, memoirs, news stories and public utterances it is known that untold numbers of serving United States senators dreamed of residing in the Oval Office. Many fewer committed to open pursuit of the office, and even fewer made it. Three Illinois senators from the 1950s to the 1990s- Republican Charles H. Percy, Democrats Adlai E.Stevenson III and Paul Simon-can be counted as actively engaged in the hunt, with widely differing outcomes. Each had internal and external pressures. Percy: Encouraged by Dwight Eisenhower and his brother Milton and dogged by media speculation. Stevenson III:Expected to follow in the footsteps of his greatgrandfather, and his father, Stevenson II. Simon: Ambitious to find ever-higher elective outlets for his policy ideas, and willing to take the risk. Circumstances aside, their common goal was to be president. Their stories include campaign images, and fresh perspectives based on documents.