Harry Truman actually said...
Now, Therefore, I, Harry S. Truman, President of the United States of America, by this proclamation, designate the year 1951 as Audubon Centennial Year, in observance of the one-hundredth anniversary of the death of John James Audubon;
Context
Proclamation 2945—Audubon Centennial Year
09/17/1951