Feb 26, 1930 S.A. Levin, D. E. Hatch, and E. Von Halle, Production of Enriched Uranium for Nuclear Weapons by Nations X, Y, and Z by Means of the Gas Centrifuge Process, Operations Analysis Division, Union Carbide Nuclear Company, 26 February 1960, Secret, excised copy Source Department of Energy MDR release
Apr 4, 1928 United Nations, Reports of International Arbitral Awards, Island of Palmas Case – Award of the Tribunal, April 4, 1928 (Island of Palmas arbitral award). Not classified. Source United Nations.
Sep 7, 1927 Permanent Court of International Justice, The Case of the S.S. “Lotus,” – Judgment, September 7, 1927 (Lotus Judgment). Not classified. Source International Court of Justice.
Jul 26, 1927 Permanent Court of International Justice, Case Concerning the Factory at Chorzów (Claim for Indemnity) – Judgment, July 26, 1927 (Factory at Chorzow judgment). Not classified. Source International Court of Justice.