Embankments in the Dollart Bay
<a href="//commons.wikimedia.org/w/index.php?title=User:Otto_S._Knottnerus&amp;action=edit&amp;redlink=1" class="new" title="User:Otto S. Knottnerus (page does not exist)">Otto S. Knottnerus</a>
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<span class="int-own-work" lang="en">Own work</span> Has been published in <i>Het Oldambt. Mensen en landschap door de eeuwen heen</i>, Scheemda 1999-2002, vol. 2: Het Oldambtster landschap.