Correspondents include F. Manby (two), 1754; A. Jones concerning an estate in Shropshire, 1762; Luffman Atterbury (two) concerning building materials, 1780; J. Evans concerning the advisability of agents keeping short accounts, 1781; notes on experiments made in drawing wagons, n.d.; contract by le Despencer's agent for supply of oak to Chatham yard, 1775.