A sermon preach'd before the Right Honourable the Lord Mayor and aldermen of the city of London, at the Cathedral Church of St. Paul, on Friday, January 30. 1729 : Being the fast-day for the excrable murder of King Charles I. By Joseph Trapp, D.D. Minister of Christ-Church and St. Leonard's Foster-Lane, London. Publish'd at the request of the lord mayor, and the sheriffs.