Copy letter from Robert William Frederick Harrison, to Dr Gray 'Dear Sir Soirée Your application to exhibit has been considered and we shall be glad to have your stereoscopic photographs as being new, but it is not thought desirable to exhibit as well, any preparations which would, in reality, be a repetition of your exhibit of June last. Kindly return the enclosed schedule at your early convenience. Faithfully yours R Harrison Asst Sec [Assistant Secretary]'. 26 April 1906