Earlier this year, in May, I shared a post about the Henry Hudson 400 Foundation’s Google Maps and Model Ships. In August, National Geographic had a feature that included an interactive timeline, images, and maps of the Manhattan of 400 years ago to which I also posted a link. Today, the TED Blog posted a video of Eric Sanderson explaining the ten-years-long process of recreating the Manhattan of 400 years ago in a 3D map.

Applications for Education
This TED Talk could be a good way to show students the things that can be done through extensive primary document research.