Copy letter from Herbert Rix, to Professor William Chandler Roberts-Austen, Fellow of the Royal Society The Society are writing to Mr [William Henry] Preece asking that the electrical requirements for Roberts-Austen's exhibit may be taken in hand at once and to let him know that two other exhibitors will take an alternating current supply. If Roberts-Austen can hasten the matter Rix asks him to do so. Encloses a proof of his exhibit title [not attached]. 22 April 1895