had become the chairman of the Algemeene Nederlandsche Vereeniging voor Wijsbegeerte [General Dutch Association for Philosophy]. He remained in office until the 10th World Congress of Philosophy had taken place in Amsterdam in August 1948. In 1947 the Foundation for Special Chairs in Calvinistic Philosophy came into existence, with Vollenhoven as chairman. Among the persons appointed to chairs, some were former students of Vollenhoven. At the Vrije Universiteit itself, S. U. Zuidema was appointed, in part to relieve Vollenhoven of the introduction to philosophy course, which, with the growth of the student population after the War, had become quite demanding. He could now apply himself almost entirely to the history of philosophy. He chose to remain the chairperson of the Association for Calvinistic Philosophy till 1963, the year that he retired. International influence Vollenhoven had followers in North America and South Africa. In North America, H.E. Runner, who had done post-graduate work under Vollenhoven, took the initiative of setting up “The Association for Reformed Scientific Studies,” which in 1967 opened the doors of the Institute for Christian Studies in Toronto. In South Africa, Hendrik G. Stoker and J.A.L. Taljaard together cooperated with Vollenhoven and Dooyeweerd in encouraging students to do post-graduate work at the Vrije Universiteit. In 1961 Vollenhoven gave numerous lectures in North America and two years later he lectured extensively in South Africa. Upon retiring in 1963, Vollenhoven was succeeded by four persons: Hendrik van Riessen, J. van der Hoeven, A.W. Begemann, and C.A. van Peursen. Van Riessen also succeeded Vollenhoven as chairperson of the “Association for Calvinistic Philosophy” (later “Calvinistic” gave way to “Reformational,” still later to “Christian”). After giving his valedictory address on “Plato’s realism,” Vollenhoven continued to give private monthly lectures to specialists in his problem-historical work. Vollenhoven died at the age of 85, having been a widower for the last five-and-a-half years of his life. Footnotes Further literature K.A. Bril, Vollenhoven’s Problem-Historical Method. Introduction and Explanations, trans. and augmented by R.W. Vunderink (Sioux Center, Iowa: Dordt College Press, 2005). J.H. Kok, Vollenhoven His Early Development (Sioux Center, Iowa: Dordt College Press, 1992). J.H. Kok, Patterns of the Western Mind. A Reformed Christian Perspective, 2nd revised ed. (Sioux Center, Iowa: Dordt College Press, 1998). J. Stellingwerff, De Vrije Universiteit na Kuyper (Kampen: Kok, 1987 [should be 1990]). A. Tol, Philosophy in the Making. D.H.Th. Vollenhoven and the Emergence of Reformed Philosophy (Sioux Center, Iowa: Dordt