5 ALS to Lord Barrington; Teddington1752 Aug-SepengAll concerning "the good effect of Ventilators" on ships and their financial and health benefits. Hales stresses cost savings from the slower decay of timber. All addressed to William Wildman Barrington, Viscount Barrington (1717-1793). With: ALS from William Wallace to Lord Barrington; Admiralty Office, 1752 Sep 22, enclosing drawing of a section of the Sheerness outfitted with Hales's ventilator. Acc.: 03.8.7