Keywords: Rotterdam Kolk 1626 1652.jpg Two birds-eye view maps showing the Kolk in medieval Rotterdam right Toonneel der Steden left 1626 right 1652 left Balthasar Florisz van Berckenrode right Joan Blaeu Image Rotterdam Kolk 1626 jpg Image Rotterdam Kolk 1652 jpg as below Two maps of the Kolk in Rotterdam Left is from a map by Balthasar Florisz van Berckenrode 1626 On the right is a detail from Joan Blaeu's Toonneel der Steden 1652 Old maps of Rotterdam Maps by Willem and Johannes Blaeu Balthasar Florisz van Berckenrode |