Proclamation 510—Extending Benefits of Copyright Law to Citizens of Cuba
By the President of the United States of America
Whereas, it is provided by section 13 of the act of Congress of March 3, 1891, entitled, "An act to amend title sixty, chapter three, of the Revised Statutes of the United States, relating to copyrights", that said act "shall only apply to a citizen or subject of a foreign state or nation when such foreign state or nation permits to citizens of the United States of America the benefit of copyright on substantially the same basis as its own citizens; or when such foreign state or nation is a party to an international agreement which provides for reciprocity in the granting of copyright, by the terms of which agreement the United States of America may, at its pleasure, become a party to such agreement";
And Whereas, it is also provided by said section that "the existence of either of the conditions aforesaid shall be determined by the President of the United States by proclamation made from time to time as the purposes of this act may require";
And Whereas, satisfactory official assurances have been given that in Cuba the law permits to citizens of the United States the benefit of copyright on substantially the same basis as to the citizens of Cuba:
Now, Therefore, I, Theodore Roosevelt, President of the United States of America, do declare and proclaim that the first of the conditions specified in section 13 of the act of March 3, 1891, now exists and is fulfilled in respect to the citizens of Cuba.
In testimony whereof, I have hereunto set my hand and caused the seal of the United States to be affixed.
Done at the city of Washington this 17th day of November, one thousand nine hundred and three, and of the independence of the United States the one hundred and twenty-eighth.
By the President:
Secretary of State.
Theodore Roosevelt, Proclamation 510—Extending Benefits of Copyright Law to Citizens of Cuba Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/206222