John Wesley wrote many letters over the years. These are the letters held in the Wesley collection at North Lincolnshire Central Library:
Wesley, John Letter to a Roman Catholic. London, Epworth Press: 1962
Wesley, John Plain account of the people called Methodists. London, Epworth Press: 1951
Wesley, John John Wesley's letter to a Roman Catholic. London, Geoffrey Chapman: 1968 Edited by Michael Hurley, S.J.
Wesley, John Selected letters of John Wesley. London, Epworth Press: 1956 Edited by Frederick C. Gill
Wesley, John Letters of John Wesley: a selection of important new letters … London, Hodder & Stoughton: 1915 With introductions and biographical notes by George Eayrs. With a chapter on Wesley, his times and work by the Right Honourable Augustine Birrell.
Wesley, John Letters of the Rev. John Wesley, A.M. VIII volumes. London, Epworth Press: 1931 Edited by John Telford, BA.