The New York Public Library just made over 180,000 of its public domain images available for high-resolution download this Wednesday. If you have some time to spare, it's definitely worth poking around the archives. All the images on the site are free to share and reuse, and you can find fascinating old menus, historical photos, documents, illustrations and more.
Below, check out ten antique maps from the database that provide interesting peeks into New York City history from 1639 to 1940. From the original plans for Fort Greene to a map of the types of industry in the city during the 1920s, each one is a pretty fascinating look at a changing metropolis.