Marjorie Reeves received an M.A. from St. Hugh's College, Oxford, and a Ph.D. from the University of London. A Fellow of St. Anne's College, Oxford, from 1938 to 1972, she also served as Vice-Principal there for many years. Her honors include a D.Litt. from Oxford, a Fellowship in the Royal Historical Society, and membership in many of the most prestigious educational commissions of the United Kingdom. In recent years she has taught and lectured at a number of American universities. Although she has written widely in the areas of education and general medieval history, Miss Reeves is best known for her work in the history of medieval apocalypticism. A series of ground-breaking articles and her collaboration with L. Tondelli and B. Hirsch-Reich on the critical edition of Joachim of Fiore's Book of Figures ( 1953) culminated in the publication of two major books on Joachim and his role in later medieval apocalypticism-- The Influence of Prophecy in the Later Middle Ages: A Study in Joachimism ( 1969), and The Figurae of Joachim of Fiore ( 1972, with B. Hirsch-Reich).