Portrait of Edward B. Koster (1861-1937) by Jacques Zon. Location: Literatuurmuseum, Den Haag
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Jacques Zon (1872-1932)</div>
1905<div style="display: none;">date QS:P571,+1905-00-00T00:00:00Z/9</div>
<i>Schrijversportretten</i> (Amsterdam, 2010), <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-90-234-6304-7" title="Special:BookSources/978-90-234-6304-7">ISBN 978-90-234-6304-7</a> (page 231)