Lady Bird flies back to Washington, DC, to Spanish class, and then to hair salon; luncheon for President-elect & Mrs. Artur da Costa e Silva, Brazil; exchange of gifts; Lady Bird has trouble attaching pin to dress; Lady Bird describes guests; LBJ gives humorous toast; Mrs. Da Cunha introduces her twin sister; tours of White House for select group; Lady Bird meets with U.S. Conference of Mayors; LBJ speaks to the mayors; Lady Bird has dinner, a massage, watches tv and to bed