The Preacher's assistant : in two parts / by Sampson Letsome. - Letsome, Sampson,‏ 1703 or 1704-approximately 1760‏ (Printed for the author, and sold by Messrs. Birt, in Ave-Mary-Lane; Williams in South Audley-Street, Grosvenor-Square; Fletcher at Oxford; and Thurlbourn at Cambridge, 1753)