11/30/1890
https://www.presidency.ucsb.edu...
"believing that the full use of silver as a coined metal upon an agreed ratio by the great commercial nations of the world would very highly promote the prosperity of all their people"
"The United States Government engages in return that the President of the United States shall, in pursuance of section 13 of the act of Congress of March 3, 1891, issue the proclamation therein provide..."
"Citizens of the United States of America shall enjoy in the German Empire the protection of copyright as regards works of literature and art, as well as photographs, against illegal reproduction, on t..."
"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;"