Reciprocal trade. Reciprocal trade, agreement, protocol, notes, and protocol of amendment between United States and Czechoslovakia, agreement, protocol, and notes signed Washington Mar. 7, 1938, protocol of amendment signed Washington Apr. 15, 1938, agreement, protocol, notes, and protocol of amendment applied provisionally on and after Apr. 16, 1938; aud Proclamation of Mar. 23, 1939, by President of United States terminating on Apr. 22, 1939, his proclamations of Mar. 15, 1938, and Apr. 15, 1938.