Prof Kenneth Collins's Wesley Bibliography
'Wesleyan and Methodist Studies Online' by Rex. D. Matthews: 'this list of online resources for Wesleyan and Methodist studies is intended to be a beginning point for exploration'.
Christopher J. Anderson (ed.), United Methodist Studies: Basic Bibliographies, 6th edn (2014).
The Duke Divinity School Center for Studies in the Wesleyan Tradition provides extensive online resources for study of the Wesleyan tradition and links to other online Welseyan/Methodist resources. The Wesley Family Papers and Frank Baker collections have recently been digitised.