Copy letter from an unknown correspondent, to Messrs West, Newman & Company The corrections made on the original plates by Dr [William] Marcet are withdrawn and the correspondent now substitutes some alterations in the lettering of one of the plates, the purpose of which is to assimilate plate B to plate A. When the Messrs have made the alterations and added the arrows the correspondent asks to see the revises of the two plates. 19 March 1890