05/01/1966
https://www.presidency.ucsb.edu...
"The fairness of this standard is so self-evident that we may well wonder that it has not always been applied."
"I, Lyndon B. Johnson, President of the United States of America, do hereby extend through the year 1966 the period during which all persons are specially invited to see the United States, visit our hi..."
"The ultimate victory of reclaiming this portion of our national heritage really rests in the hands of all the people of America, not just the Government here in Washington."
"I believe that with your help and your continued cooperation, water pollution is doomed in this century."