Planning a trip to New York? The Museum of the City of New York has three exhibitions of special interest to Nederlanders. This one is for map-people, too. Written-about in an Arts section review in the New York Times, the exhibition sounds a delight, and there is a book by the exhibition designer, Eric W. Sanderson and a clever Google maps mashup website about the Mannahatta Project sponsored by the Wildlife Conservation Fund. Time to travel.
Update 5/7/2018: In 2010, and until 2013, the Mannahatta Project became the Welikia Project. In 2017 an entry in Jason King’s blog Hidden Hydrology explains recent project developments.