Pertwood Farm sale. Estate Records. Brixton Deverill, Wiltshire. Estate correspondence. Letters between Thomas Baker and J.M. Stratton of Warminster concerning the 1772 sale of Pertwood Farm, can be found in the archives at the Wiltshire And Swindon History Centre at Cocklebury Road, Chippenham, Wiltshire, SN15 2QN. They are dated 1900. The reference number is BRD/45.