Cyrus Vance, Dick Helms & Dean Rusk fly to LBJ Ranch; Richard Nixon & Spiro Agnew arrive by plane; lunch; guests depart; Lady Bird still feeling ill, lies down to read; tours of Danz & Martin Ranches; Marvin & Marion Watson arrive by plane; George McGovern enters Presidential race; LBJ's test at Brooke Army Hospital; dinner; "Hang Em High" movie & bridge game; Lady Bird becomes ill & retires