1. For previous correspondence regarding concern of the United States over demands of the Soviet Union upon Finland, and the outbreak of the Winter War, see Foreign Relations, 1939, Vol. i, pp. 952 ff.
  2. For previous correspondence regarding pressure by the Soviet Union upon the Baltic States to conclude pacts of mutual assistance, see Foreign Relations, The Soviet Union, 1933–1939, pp. 934 ff.
  3. For previous correspondence on relations and wartime cooperation between Germany and the Soviet Union, see Foreign Relations, 1939, vol. i, pp. 312 ff. and pp. 477 ff.
  4. For previous correspondence on Anglo-French-Soviet negotiations attempting to reach an agreement against aggression, see Foreign Relations, 1939, vol. i, pp. 232 ff.