Lyndon Baines Johnson Taking Oath of Office. January 20, 1965. TLS President LYNDON BAINES JOHNSON (Lyndon B. Johnson, Lyndon Johnson, LBJ) in front of the Capitol taking oath of office from Chief Justice EARL WARREN, Claudia Taylor (Lady Bird) Johnson (Lady Bird Johnson) in red, "I Lyndon Baines Johnson do solemnly swear that I will faithfully execute the office of the Presidency of the United States and will to the best of my ability preserve, protect & defend the Constitution of the United States, so help me God."