Senate executive document, 88th Congress, 1st session. P. Protocol modifying and supplementing extension to Netherlands Antilles of income tax convention with Netherlands, message from President of United States transmitting protocol signed The Hague Oct. 23, 1963, modifying and supplementing extension to Netherlands Antilles of convention between United States and Netherlands for avoidance of double taxation and prevention of fiscal evasion with respect to taxes on income and certain other taxes.