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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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Year

Most Recently Rectified Maps

Map Title Year Last modified Status
?t=t&id=1531772
from Borough of Richmond, Topographical Survey. (In 1 layer) Depicts: 1906
1906 about 12 hours ago. 3 control points.
?t=t&id=1515689
from Atlas of Staten Island, Richmond County, New York, from official records and surveys; compiled and drawn by F. W. Beers. (In 1 layer) Depicts: 1874
1874 about 13 hours ago. 6 control points.
?t=t&id=1531749
from Borough of Richmond, Topographical Survey. (In 1 layer) Depicts: 1906
1906 about 13 hours ago. 4 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.