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 ..."

"The Secretary of the Treasury is hereby designated and empowered to perform the following-described functions of the President without the approval, ratification, or other action of the President"

"All actions heretofore taken by the President in respect of the matters affected by this order and in force at the time of the issuance of this order, including regulations prescribed by the President..."

"The authority vested in the Secretary of the Treasury by section 1805 of the Internal Revenue Code (26 U.S.D. 1805) to issue rules and regulations (with respect to silver bullion) necessary or proper ..."