]> 2026-05-22T06:04:23+00:00 1939 documents 14 en 1939 documents Einstein–Szilard letter 0 en Einstein-Szilard letter Humani generis unitas 0 en Humani generis unitas Oslo Report 0 en Oslo Report Ringelblum Archive 0 en Ringelblum Archive Sertum laetitiae 0 en Sertum laetitiae Slattery Report 0 en Slattery Report Summi Pontificatus 0 en Summi Pontificatus War Order No. 154 0 en War Order No. 154 White Paper of 1939 0 en White Paper of 1939 Einstein–Szilard letter 0 en Einstein-Szilard letter Humani generis unitas 0 en Humani generis unitas Oslo Report 0 en Oslo Report Ringelblum Archive 0 en Ringelblum Archive Sertum laetitiae 0 en Sertum laetitiae Slattery Report 0 en Slattery Report Summi Pontificatus 0 en Summi Pontificatus War Order No. 154 0 en War Order No. 154 White Paper of 1939 0 en White Paper of 1939 INST 102 en INST