Hans van den Bogaard did not hesitate when asked whether he would like to photograph the Vrolik Collection, especially as the assignment he was offered was not just to document the collection, but to visualise it in a much freer manner. Thus, to a great degree Van den Bogaard was able to be led by his own preferences and fascinations, and to choose the specimens which had the most to offer him as a photographer. (http://arttattler.com/archivecollectievrolik.html)