10/24/1948
https://www.presidency.ucsb.edu...
"And I call upon the schools, churches, organizations, and people of the United States generally to observe the day with appropriate ceremonies, thereby giving expression to the cordial and friendly se..."
"Now, Therefore, I, Harry S. Truman, President of the United States of America, do hereby proclaim Thursday, April 14, 1949, as Pan American Day;"
"To them we should offer not only our aid in physical things, but also the sense of brotherhood in a common cause."
"We know that we enjoy these great blessings not because of any special merit on our part, but because of the bounty of God."