Agreement between the United States and Norway extending the duration of the arbitration convention of April 4, 1908 1
Washington , March 7, 1918 .
File No. 711.5712/16
Washington , March 23, 1918 .
File No. 711.5712/17
 Agreement signed at Washington, March 30, 1918; ratification advised by the Senate, April 30, 1918; ratified by the President, July 1, 1918; ratified by Norway, May 14, 1918; ratifications exchanged at Washington, July 1, 1918; proclaimed July 12, 1918
Done in the District of Columbia this twelfth day of July in the year of our Lord one thousand nine hundred and eighteen, and of the Independence of the United States of America the one hundred and forty-third.
Treaty Series No. 632