Lyndon Johnson actually said...
The following are hereby superseded: (1) Executive Order No. 10154 of August 22, 1950. (2) Executive Order No. 10558 of September 8, 1954. (3) Executive Order No. 10686 of November 1, 1956.
Context
Executive Order 11313—Providing that Certain Officers May Act as Postmaster General
10/16/1966