Copy letter from Robert William Frederick Harrison to Professor A S Grunbaum, School of Medicine, The University, Leeds 'Dear Sir, Referring to your letter of March 12, enclosing a list of missing numbers in a set of the Proceedings [of the Royal Society] which you have received lately, we could supply all the deficiencies you require, and in the circumstances would give you the discount allowed to the trade, namely, 15% off the published prices. An alternative would be to obtain them, it that possible, from a secondhand bookseller, say Wheldon, 38 Great Queen Street, WC.' 15 March 1910