In Danger Undaunted, based on 338 manuscript boxes deposited in 1942 in the archives of the Hoover Institution on War, Revolution and peace, conveys the logic, complexity, and passion of the anti-interventionist movement. The book illustrates the dramatic impact this well-organized and vocal group had on the foreign policy of the United States and on the political behavior of many of America's most prominent statesmen of the prewar years.