CLIFFORD'S TALK WITH NICHOLAS KATZENBACH?; LBJ'S TALKS WITH KEN O'DONNELL, LARRY O'BRIEN, MCGEORGE BUNDY, MCNAMARA ABOUT RFK; PRESS HANDLING OF RFK MEETING WITH LBJ; LIFE MAGAZINE WRITERS MEETING WITH ABE FORTAS, POSSIBLY LBJ; BROWN & ROOT DAM CONTRACT