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!
Clark's map of Fairfield County, Connecticut / By & under the direction of J. Chace, Jr., civ. eng., Troy, N.Y. & W.J. Barker, N. Hector, New York.
From Connecticut (In 5 layers) Depicts: 1858
|1858||1 day ago.||8 control points.|
Williams' map of the City of Binghamton, N.Y. / "Copyrighted July, 1899 by J.E. Williams; S.J. Kelley, eng. Co., Bing., N.Y."
From Cities and towns, A-Z (In 2 layers) Depicts: 1899
|1899||1 day ago.||21 control points.|
from County atlas of Westchester, New York. Published by J.B. Beers & Co., assisted by S.W. Wilson and others. (In 1 layer) Depicts: 1872
|1872||1 day ago.||5 control points.|