McLaren (Bruce), 'From the Cockpit' 1964 ; Pruller (Heinz), 'Jochen Rindt' 1970 ; Brabham (Jack), 'When the Flag Drops' 1971 ; Cooper-Evans (Michael), 'Private Entrant - Racing with Rob Walker' 1965 ; Gauld (Graham), 'Jim Clark Remembered' 1975 ; and eighteen other biographies. (23)