His doctoral thesis was directed by Karl Dietrich Bracher and examined US-foreign policy "between idealism and realism".
Mason criticized Klaus Hildebrand and Karl Dietrich Bracher for focusing too much on Hitler as an explanation for the Holocaust.
Karl Marx | Marlene Dietrich | Dietrich Fischer-Dieskau | Dietrich Bonhoeffer | Karl Pilkington | Karl Lagerfeld | Karl G. Heider | Karl Rove | Karl Pearson | Karl May | Karl Liebknecht | Karl Friedrich Schinkel | Karl Dönitz | Karl Jenkins | Karl Stefanovic | Karl Bodmer | Hans-Dietrich Genscher | Karl Wilhelm Friedrich Schlegel | Karl Malone | Karl Wolf | Karl Valentin | Karl Popper | Karl Malden | Karl Kesel | Karl Barth | Karl Richard Lepsius | Karl Philipp von Wrede | Karl Kautsky | Karl Johans gate | Karl-Heinz Kämmerling |