Restrictions on the travel of Soviet officials
 Memorandum by the United States Deputy Representative on the North Atlantic Council (Spofford) to the Secretary of State
[Lisbon,] February 20, 1952.
Lisbon, February 22, 1952—3 p.m.
 Memorandum by the Acting Director of the Office of Eastern European Affairs (Barbour) to the Acting Secretary of State
[Washington,] February 23, 1952.
Lisbon, February 27, 1952—3 a.m.