(en) Preliminary Commission of Inquiry into the Charges Made Against Trotsky in the Moscow Trials et Albert M. Glotzer (reporter de la cour), The Case of Leon Trotsky : Report of Hearings on the Charges Made Against Him in the Moscow Trials (lire en ligne) La commission d'enquête est composée de John Dewey (prés.), Carleton Beals (démission), Otto Ruehle, Benjamin Stolberg et Suzanne LaFollette (secrétaire)