•
Lenin: 30 Jahre Russland, 1927. Translated by
E. W. Dickes as
Lenin. New York: Macmillan Co., 1928. •
Männer und Mächte der Gegenwart, 1930. Translated by
Eden and
Cedar Paul as
Men and Forces of Our Time, 1931 •
The Birth of the Nations, From the Unity of Faith to the Democracy of Money, 1932. ==References==