Five maps by Frederick de Wit (1630-1706) have been digitally restored: rather than trying to restore the badly damaged originals, the maps were instead digitized and the digital copies were then manipulated. Missing parts were spliced in from other editions where appropriate, for example. A popup viewer allows a comparison between the original and restored maps (click on “Naar de viewer” at the bottom of the page, which is in Dutch). Via MapHist.