Correspondence with tradesmen, including letters from booksellers; coal merchants; clock repairers; horologists; builders; chandlers; merchants; instrument makers; opticians; stationers; parcel carriers; chemists; journeymen; decorators; bookbinders; import agents; masons; glass manufacturers; slaters; the Post Office; furniture removers; valve makers; rubber manufacturers; ironmongers; the Tax Office; and the Kent Water Company. The letters cover various instructions; accounts; requests; bills; receipts; invoices; tenders; circulars; routine repairs; and adjustments and improvements to instruments. There are also notes by W.H.M. Christie and E. Dunkin; value catalogues; a booklet containing a short summary of the history of the chronometer maker E.J. Dent; and a preface by C. Pritchard to a book titled 'Sun, Moon and Stars, a book for beginners'.