In 1728 he published some 'Verses on the Recovery of the Lord Townshend, humbly inscribed to … Sir Robert Walpole,' with a poem on William III (Craftsman, 15 June 1728).
Howard's best known work is A Collection of Letters from the original Manuscripts of many Princes, great Personages and Statesmen.
Another edition was in two volumes, with Memoirs of the unfortunate Prince Anthony the First of Portugal, and the Oeconomy of High-Life, London, 1756.
Besides sermons, Howard also published: He also revised a Layman's 'New Companion for the Festivals and Fasts of the Church of England,' London, 1761.
Howard's literary thefts exposed him tocriticism, to which he refers in the prefaces to his 'Newest Manual' and 'Collection of Letters.'