Fastest round of golf?

I don't think there are any sources which gather statistics for the fastest rounds of golf ever played.I do know that our pro was the final qualifier for the US Senior open a few years back. The pro who was to play with him decided to drop out so he played with a marker. Charlie played the first hole before the worker could reset the pin position . The worker had to step up his pace to finish new pin positions on the other 17 holes . Our pro finished 18 holes in 1 hour 55 minutes walking on a 6750 yard course for his final round.