Copy letter from an unknown correspondent, to Messrs Werner & Winter, Frankfurt 'Herewith Mr Poulton's plates for press. They have given great satisfaction. They are to be Plates 3 & 4, & we shall want 1700 copies of each plate. Please let us have them at the earliest possible moment, otherwise the series of our "Proceedings" ['Proceedings of the Royal Society'] will be kept waiting. Deliver the plates, when ready, to Messrs Harrison & Sons, 45 St Martin's Lane, London'. 27 October 1893