Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to the Librarian, Yale University Library, New Haven , Conn., USA 'In reply to your enquiry for a copy of our Name Index to our Proceedings, Volumes 1-75. I have the pleasure to inform you that we are sending the Yale University Library a presentation copy, per the agents you name (Messrs E G Allen & Son), and trust that it will duly reach you.' 27 April 1915