12/31/1963
https://www.presidency.ucsb.edu...
"Record levels of United States foreign trade contributed greatly to this advance, and the American people shared fully in its benefits."
"This is the real meaning of ZIP Code."
"We welcome this 'mail explosion,' for it is a sure sign of our national prosperity."
"I now call upon all Americans to demonstrate the spirit of wholehearted cooperation that is needed to make the program an unqualified success."