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!
A map of Pennsylvania exhibiting not only the improved parts of that Province, but also its extensive frontiers : laid down from actual surveys and chiefly from the late map of W. Scull published in 1770 : and humbly inscribed to the Honourable Thomas Pe
from Whole (In 6 layers)
|about 6 hours ago.||3 control points.|
From Atlas 134. Vol. 2, 1915. (In 4 layers) Depicts: 1915
|about 10 hours ago.||5 control points.|
Manhattan, V. 3, Double Page Plate No. 56 Map bounded by Bethune St., Hudson St., W. 10th St., Hudson River
From Atlas 42.53. Vol. 3, 1895. (In 4 layers) Depicts: 1895
|1 day ago.||9 control points.|