Copy letter from Herbert Rix, to General James Thomas Walker, Fellow of the Royal Society 'Dear Sir, The box containing Colonel Herschel's MSS [manuscripts] was handed to me quite safely, and the assistant-librarian has checked the contents. These seem to be complete, and the library book which you also return has been marked off. I am, yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 25 April 1889