Coat of arms of the ambacht / water board Drechterland in West-Friesland, The Netherlands
Marc Hameleers, West-Friesland in oude kaarten, Inmerc BV, Wormer, The Netherlands, 1987. Page 86.
SVG after example of the scan by the uploader of the abovementioned book. Detail of a 1735-1736 map that was compiled by Jan Harge, surveyor, Pieter Straat and Jacob Bennebroek, engraver Hendrik de Leth. SVG is Own work