For our many researchers who investigate specific sites, blocks, or neighborhoods in New York, there may already be familiarity with our online resources for fire insurance and property maps. For historical information from the mid-19th century to the early 1920s, freely accessible without a library card, there are Sanborn and similar publishers’ (Perris, Bromley, Hyde, Robinson) maps showing New York City building footprints, construction materials, and some land use information, digitized in full color, from NYPL’s collections. There are many ways to access these, including the list of links (referenced on a previous tab) by borough and date, and the Map Warper search by location.
Also worth a look, for browsing or searching, is a miscellaneous variety of maps of New York City and State, including counties, in NYPL’s Digital Collections.
NYPL Digital Collections Image ID 5086135 Map of 197 Lots known as the Broadway City Line Property, 1914