Letter from [Richard Tetley] Glazebrook, The National Physical Laboratory, Bushy House, Teddington, Middlesex, to Robert [William Frederick] Harrison, Assistant Secretary of the Royal Society, Burlington House 'Dear Mr. Harrison, Thanks for yours of the 8th with regard to Messrs. Campbell and Harker's papers. I am sorry it was not made clear to the printers that we did not require additional copies of these two papers. They are being reprinted quarto size for our own [Philosophical] Transactions. Yours faithfully, R T Glazebrook'. 10 December 1906