The Marlborough Car Club have ' digitized ' and posted much of their archives - including lots of photos of the Renwick Road Races of the 1960's -including the Renwick 50.
a couple of photos one from MCC archives and some programme details.
These are of the Saloon Races.
Mixed field as this was practice
This from Floyd Dini ; 1963 Austin Prattley in the Herald - the Mini must check that out.
Race 5 from 1963 -Graham Woods archives Allcomer Saloons Scratch Race
Race 7 from 1963 Graham Woods archives Allcomer Saloons again Handicap Race
Front cover of the programme - the 3rd National Renwick Races - Ron McPhail archives
Map of the track - there were apparently 3 variations - this is 1962 - Ron McPhail archives
There is a Video recently uploaded from U -tube of the 1965 Renwick 50.
Will try and post it here - in a future post.