The last time I contacted them I got a reply - sadly long since filed in the circular filing cabinet in my office - to the effect that the records were then in the process of being catalogued and that that process, as it was being undertaken by volunteers was likely to take a couple of years. That was back in February and if memory serves me correctly, I believe that some of the Bute library staff were involved and if one had a specific enquiry, they may be able to help. You may like to contact the estate. Email is [email protected] I am sure there will be a flood of enquiries if records were ever accessable over the web!