Who doesn't love a large geotagged data set of historical photos? The OldNYC app let's you click on a location and pull images from the NY Public Library's Photographic Views of New York City, 1870s-1970s collection so you can see what the area or building looked like years ago. The app is a mobile version of  OldNYC.org which mapped the collection's images after they … [Read more...]