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!
Map of Lebanon County, Pennsylvania / Surveyed & published by Hy. F. Bridgens ; lith. of Friend & Aub, 332 Walnut St. Phila.
From Parts (In 6 layers) Depicts: 1860
|1860||about 9 hours ago.||Unrectified.|
from New general atlas. (In 2 layers) Depicts: 1860
|1860||2 days ago.||15 control points.|
Outline & Index Map of The Borough of Richmond City of New York Published By E. Robinson 1907; Explanation; Note.
from Atlas of the borough of Richmond, city of New York. (In 1 layer) Depicts: 1907
|1907||2 days ago.||4 control points.|