KÖLKER,A.J., Kroniek van de Beemster – Geschiedenis van de Bemaling – Beemsterlants Caerten.
Alphen a.d.rijn, Canaletto ,1981, 109+58+18pp. and 12 double paged plates, lots of illustrations in the text, interesting compilation of 3 works in one attractive volume concerning the history of De Beemster.