Even better than the original 1932 atlas, which chronicles the American story from 1492 on, this site enhances the nearly 700 maps with animation to show change over time or views of the underlying data.
Start your land-records research here, with a database of more than 5 million federal land title records from 1788 on. No luck? Move on to the images of survey plats and field notes, control document index records and land status records.
Peruse 1.6 million historical maps—many of them compatible with the “geographic time machine” of Historic Earth that overlays them with a modern map. Prints and full-size downloads are available for purchase.
Gorgeous color maps, viewable side-by-side with modern maps or in 3D, bring 18th- and 19th-century Europe to life. It’s strongest on the former Austro-Hungarian Empire, but now extends to Scotland and Norway.