If you have questions or comments, or know where we can find one or more of the 12 missing titles (see here), please contact us.
This site is managed by the children of Cornelis Verhoeven, Neeltje and Daan, with help from a few friends of ours and of dad, out of admiration for the work and with love for the author. It is all volunteer work, so it may be that a reply sometimes takes a few days.
