Copy letter from Robert William Frederick Harrison, to William Henry Preece, Fellow of the Royal Society 'My dear Sir, I found your note enclosing the one from Lord Kelvin [William Thomson] on my return after the Christmas vacation. Major Cardew's certificate has already been resuspended on your request, and I am not permitted to send it out of the house, but I have told Lord Kelvin that his name can be added at any time when he happens to be passing through town. I am, yours very truly, Robt Harrison Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 4 January 1897