Peter Church found this amongst the late Noel Sugden's material. Of note is the number of persons shown on the competitor list (309). Along with the number of persons who were competing in this particular match.
The results are eighteen pages long. Notably, this was all hand typed, probably on a manual typewriter. Maybe they had a adding machine to help with the calculations, but this was almost fifteen years before the first hand calculators, and about a quarter century before the IBM PC.
Look it over and enjoy the nostalgia.
1961 Grayling XTC Match Results.pdf