- Husserl, Edmund, 1859-1938 (3)
- Claesges, Ulrich, 1937- (1)
- Kern, Iso (1)
- Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716 (1)
- McRae, R. F. (1)
- Mill, John Stuart, 1806-1873 (1)
- Morris, Mary, 1901- (1)
- Parkinson, G. H. R. (George Henry Radcliffe) (1)
- Robson, John M. (John Mercel), 1927- (1)
- Strasser, Stephan, 1905- (1)