Copy letter from Robert William Frederick Harrison to G H Gulliver, The University, Edinburgh 'Dear Sir, With reference to your letter of February 13, I anticipate no objection on the part of the Royal Society to your reproducing the illustrations you refer to in your forthcoming book on "Metallic Alloys", provide you obtain the consent of the authors of the papers, but I should need to have an assurance to that effect from them.' 14 February 1908