Copy Letter from Robert William Frederick Harrison to Professor E [Edmund] T [Taylor] Whittaker, Fellow of the Royal Society, Dunsink Observatory, Co. Dublin 'Dear Professor Whittaker, I thank you for the abstract of your paper, which I am having set up in type for the meeting. Professor Larmor has substituted the new version of the introductory section of your full paper for the original 1, and the manuscript has now been sent to the printers.' 22 May 1908