Copy letter from Robert William Frederick Harrison to Messrs Reynolds & Branson, 14 Commercial Street, Leeds 'Dear Sirs, I understand that you supply a spring dark blind to be fitted under fillets in a winder for the purpose of darkening a room, and I shall be much obliged by your informing me of your price for two blinds of this kind for ordinary darkening (not photographic) extending 8ft in length and 4 ft 6 ins wide; also one of more opaque material for photographic dark measuring 5 ft 6 ins in length x 4ft 7 ins.' 18 May 1909