Agreement between the United States of America and the United Kingdom of Great Britain and Northern Ireland respecting reciprocal trade. Signed at Washington November 17, 1938; proclaimed by the President of the United States November 25, 1938; effective provisionally, with the exception of article XI and Schedule III, as provided in article XXIV, on and after January 1, 1939; ratified by His Majesty in respect of the United Kingdom September 18, 1939; proclamation and ratification exchanged at London November 24, 1939; supplementary proclamation by the President of the United States December 6, 1939; entire agreement effective definitively December 24, 1939, as provided in article XXIII. And exchanges of notes.