Copy letter from an unknown correspondent, to Mr Collings 'Your estimate for Mr Capstick's [John Walton Capstick] diagrams is accepted (£7-2-6). All to be done on wood, and to be delivered as soon as possible. I return all the diagrams herewith, excepting Fig. [figure] 2, which I am sending on to the author with the request for a description'. 3 November 1893