Copy letter from Robert William Frederick Harrison, to E A Clowes, Messrs William Clowes & Sons, Duke Street, Stamford Street, S.E. In reply to note, it is essential that the cards should be cut to a uniform size since they would be used as a card catalogue and sorted in a special drawer. If the entries were not arranged as cards of a uniform size there would be no object in ruling them off from one another as they would be of no use cut up. 22 March 1898