The NYPL Map Warper is a tool for digitally aligning ("rectifying") historical maps from the NYPL's collections to match today's precise maps. Visitors can browse already rectified maps or assist the NYPL by aligning a map. Play the video above to tour the site and learn how to rectify a map yourself.
Everyone is welcome to participate!
|1956||about 2 hours ago.||24 control points.|
|1956||about 2 hours ago.||8 control points.|
|1956||about 3 hours ago.||18 control points.|