Harry Truman actually said...
Now, Therefore, I, Harry S. Truman, President of the United States of America, do hereby designate May 1, 1947, as Child Health Day; and I invite interested individuals and agencies to observe the day with appropriate ceremonies designed to stimulate interest in and devotion to the cause of child welfare in the coming year.
Context
Proclamation 2726—Child Health Day, 1947
04/07/1947