A sermon preached before the Right Worshipful Sir Crisp Gascoyne, Knt. Alderman, treasurer, And the Rest of the trustees for the Charity Schools, In the Ward of Portsoken, London, founded by Sir John Cass, Knt. deceased; Late Alderman of the said Ward, on Monday, February 21, 1757, being the Day appointed for the Commemoration of the Founder. In The Parish Church of St. Botolph without Aldgate, London. By Thomas Keighly, M. A. Vicar of Leyton in Essex. Published at the Request of the trustees.