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!
Post route map of the state of Maine and of the adjacent parts of New Hampshire and the Dominion of Canada / by W.L. Nicholson, topographer of P.O. Dept.
From Maine (In 5 layers) Depicts: 1880
|1880||3 days ago.||5 control points.|
Plan of the city of New-York : the greater part from actual survey made expressly for the purpose the rest from authentic documents / by Thos. H. Poppleton, city surveyor ; P. Maverick sc. Newark.
from Manhattan Depicts: 1817
|1817||3 days ago.||111 control points.|
from Atlas of the city of New York : embracing all territory within its corporate limits from official records, private plans & actual surveys / by and under the supervision of E. Robinson & R.H. Pidgeon, civil engineers. (In 1 layer) Depicts: 1885
|1885||3 days ago.||21 control points.|