Frank Baker began, and Randy Maddox has continued building, a comprehensive bibliography of every book (and significant articles) that it can be documented John Wesley owned, read, quoted, excerpted, and the like. This bibliography will be included on this website, but is still in process. In the meantime, the following more focused bibliographies may be of help.
John Wesley’s Reading: Book Collection at Wesley’s House, London (pdf)
John Wesley’s Reading: Evidence in Kingswood Library (pdf)
Kingswood Library Holdings (ca. 1775) (pdf)
Remnants of John Wesley’s Personal Library (pdf)
The Wesley Works Editorial Project 