Tessa Roynon, former M.A. graduate student, who teaches as a Research Fellow in English at St. Peter's College, Oxford, has just published a volume for Cambridge Introductions to Literature titled The Cambridge Introduction to Toni Morrison.

http://www.cambridge.org/us/knowledge/isbn/item6888447/The%20Cambridge%20Introduction%20to%20Toni%20Morrison/?site_locale=en_US