My main comment is that I don't know what information is available back that far. I just joined the board in April and I haven't looked at records that go back past last year yet.
My only answer is that I don't know what information exists, what's in the file, what's in the records. I feel fairly confident that with a more limited period I can speak directly to the people involved. If we go back further than that, I don't even know where the former members of the board are.