Roger, my Dad was the Town Clerk of the Borough Council when the races were run. He was appointed the day the DC3 crashed on the Kaimais.
In the pic you have in post #231 of the coupes in a cloud of dust, you can see the Council offices (where locals booked their appointments for driver licence tests etc). Dad's office was right on the corner diagonally across from Cleaver motors. Next building following the race course was the little Public library, clad in fibrolite, then the Memorial Hall.
Ivan Toomey, one of the organising committee was on the council and perhaps Doug Turner too. Ken Gouk was the Mayor (Owner of Gouk Motors which were on Broadway.