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.