1. Treaty concerning the Re-Establishment of Peace between Germany and the United States of America, Signed at Berlin, August 25, 1921, LNTS, Vol. 12 (1922) 192–197.
2. The Treaty of Peace with Germany in the United States Senate;FINCH;AJIL,1920
3. The Peace Treaties;ANDERSON;AJIL,1921
4. Le sénat des Etats-Unis et le traité de Versailles;DEBYSER;Revue d'histoire de la guerre mondiale,1932
5. D.F. FLEMING, The United States and the League of Nations, 1918–1920 (1932, Reissued 1968).