Richard Nixon actually said...
All executive departments, independent establishments, and other governmental agencies, including their field services, shall be closed on Thursday, January 25, 1973 as a mark of respect for Lyndon Baines Johnson, the thirty-sixth President of the United States.
Context
Executive Order 11700—Providing for the Closing of Government Departments and Agencies on Thursday, January 23, 1973
01/22/1973