1941 An article in four parts
1931 Article
1927 Introduction to a book
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1938 Encyclopedic entry
1942 Letter
English translation of ‘Geert Groote’ by Susan Verkerk-Wheatley / Anne-Marie Bos
Comment (English) on ‘Geert Groote’ by Marinus van den Berg
1939 Radio speech
1936 Radio speech
1918 Article
1928 Newspaper article