Bill to Cambridge Philosophical Society for payment due to a Mr Nicholls (‘By direction of Charles Humfrey Esq. Architect’) ‘For a Measurement & Valuation of the several Works done in Additions to a Contract & in Omissions therefrom for Erecting & finishing the Society’s new Rooms &c in All Saints Passage’, October - December 1833, together with covering letter from Thomas Nicholls of Little Distaff Lane [City of London], 7 December 1833, to Charles Humfrey.