The CRO has. - 3 or 4 years ago a certain CRO member was involved in getting a nice copy drawn up of the large Preston Caving Club original survey (from the only copy known to exist, which was fading fast). This was when I was diving the sumps; I surveyed the four sumps at the time, specifically so they could be added. I suggest you ask someone at CRO; if you hit problems, PM me for another idea.
