01/21/1968
https://www.presidency.ucsb.edu...
"Now, Therefore, I, Lyndon B. Johnson, President of the United States of America, do hereby designate the week of November 19 through November 25, 1965, as National Farm-City Week."
"In the event of an inability which would prevent the President from so communicating with the Vice President, the Vice President, after such consultation as seems to him appropriate under the circumst..."
"In the event of inability the President would--if possible--so inform the Vice President, and the Vice President would serve as Acting President, exercising the powers and duties of the Office until t..."
"I am asking the Department of State to seek through the Swiss Government immediately the agreement of the Cuban Government in a request to the President of the International Red Cross Committee."