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NYPL Map Warper

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How to use this tool

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!

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Most Recently Rectified Maps

Map Title Last modified Status
?t=t&id=1619055
from De zee-atlas ofte water-wereld : waer in vertoont werden alle de zee-kusten van het bekende des aerd-bodems : seer dienstigh voor alle heeren en kooplieden, als oock voor alle schippers en stuurlieden / by Pieter Goos. (In 2 layers) Depicts: 1672
about 17 hours ago. 6 control points.
?t=t&id=1619018
from De zee-atlas ofte water-wereld : waer in vertoont werden alle de zee-kusten van het bekende des aerd-bodems : seer dienstigh voor alle heeren en kooplieden, als oock voor alle schippers en stuurlieden / by Pieter Goos. (In 2 layers) Depicts: 1672
about 19 hours ago. 6 control points.
?t=t&id=1520721
from Map of the city of Brooklyn : being the former cities of Brooklyn & Williamsburgh and the town of Bushwick, as consolidated January 1st, 1855 by an act of the legislature of the State of New York ... showing also a part of the City of New York. (In 2 layers) Depicts: 1855
1 day ago. 17 control points.
There are no known US copyright restrictions in maps available through Map Warper.
NYPL is distributing these images under a Creative Commons CC0 1.0 Universal Public Domain Dedication.
For more information, see the Export tab for a map.