Letter from [Andrew] Noble, Elswick Works, Newcastle upon Tyne, to Robert [William Frederick] Harrison, Burlington House, London 'Dear Mr. Harrison, Herewith I send you copies of Plates Nos. 10, 11, 13 and 19 (out of 10 to 19) for my paper in the Philosphical Transactions of the Royal Society. Will you kindly say whether they are right as to thickness of paper, size, and headline, including the Plate number, and let me know, as we are now ready to proceed with the full number of these. I am, Yours truly, A Noble'. 10 September 1906