Otto von Bismarck | Otto | Otto III | Otto Piene | Otto I, Holy Roman Emperor | Otto I | Otto Preminger | Otto II | Otto Dix | Otto Natzler | Otto II, Holy Roman Emperor | Otto Binder | Otto Skorzeny | Otto Schenk | Otto of Brunswick | Otto Kerner, Jr. | Otto Steinbrinck | Otto Kerner | Otto IV, Holy Roman Emperor | Otto IV | Otto III, Holy Roman Emperor | Otto Braun | Miranda Otto | Frei Otto | Otto-Werner Mueller | Otto Schmidt | Otto Muehl | Otto Lilienthal | Otto Klemperer | Otto Hermann Kahn |
While writing, Brown spent time in Germany, and also personally interviewed General George C. Marshall, General Dwight D. Eisenhower, General Joseph T. McNarney, General John H. Hilldring, John Foster Dulles, James F. Byrnes, former President Herbert Hoover, R. C. Lefingwell, Otto Jeidels, and former Senator Sinclair Weeks, among many others.