D. H. Th. Vollenhoven - Footnotes

Footnotes

1. Post by Jan de Koning from the discussion list at the American Scientific Affiliation on his experience with Vollenhoven.
2. Biography of Ernst Cassirer
3. J. Stellingwerff Vollenhoven's biographer,
4. "Report of Divergences I" by Vollenhoven.
5. Schematic Charts