Photo gallery
ill. 37 Ada van der Poorten Schwartz; pastel by Thérèse Schwartze from 1897.
ill. 25 Pen drawing by Lawrence Alma-Tadema from 1909.
ill. 35 Anna van der Poorten Schwartz van Vollenhoven.
ill. 26 Carl Schwartz.
ill. 28 Cornelia Schwartz van Vollenhoven
ill. 4 Maarten Maartens and Ada (r) in their English car, a Humber (1905).
ill. 38 Maarten Maartens and Willem, Nauheim 1908.
ill. 23 Charcoal drawing by Thérèse Schwartze from 1901.