Archive › HA 254 - Letter paper of the building in Hyde Park for the Great Exhibition 1851 published by C & E Layton, Fleet Street, London. Image 1 of 1 HA 254 - Letter paper of the building in Hyde Park for the Great Exhibition 1851 published by C & E Layton, Fleet Street, London. £0.00 Printed on thin blue paper watermarked ‘Towgood 1851’ with the text in English and French. Add To Cart Added! Printed on thin blue paper watermarked ‘Towgood 1851’ with the text in English and French.