05/04/1947
https://www.presidency.ucsb.edu...
"I want action."
"I also call upon the officials of the Federal, State, and local Governments, representatives of civic, educational, and religious organizations, and agencies of the press, radio, television, motion pi..."
"I hope that time will come to an end."
"I, Harry S. Truman, President of the United States of America, do hereby urge the citizens of this Nation to observe Wednesday, October 24, 1951, as United Nations Day."