These are all most worthy quests. It was a reaction to a similar, earlier quest that led to the USGA starting to put such things on line. We are not there yet, but if we keep at it we can gradually build up a valuable archive and resource.
There is always the question of authenticating material, of verifying sources and so on, but surely it is better to get as much source material into the public domain as possible to let scholarship flow than to let it stagnate because someone is not sure if they will be shot down by the arrogant who, apparently, know better.
I can't think of a better example of how this website might be used than the current series of inquisitive posts about MacKenzie from Neil Crafter. It sent me to the remnants of a public pitch-and-putt in Buxton, but what a lot I learned from going there! It is on my doorstep, but I didn't know it was there. From a golfing point of view it is negligible, but what a revelation!