Sanborn Fire Insurance Maps

The fire insurance maps were mainly designed to help fire insurance agents determine the degree of damage to a property and show accurate information to help them determine risks and establish premiums. The maps included street names, property boundaries and lot lines, and house and block numbers. Today, the maps are an invaluable guide to inner-city history, land use, and historic preservation.

Local Interactive Mapping

TCIMAP-Ithaca City and Tompkins County

TCIMAP enables the public to: access, query, locate and analyze a variety of tabular and spatial resources within the City of Ithaca and Tompkins County.Tompkins County utilizes ESRI's ArcIMS technology to provide the public with the most current data available.

Land Ownership

A popular category with genealogists and local historians. These maps, which are presented either as large wall maps or as atlases, show property lines and the names of owners. Most date from the mid to late 19th century. Formerly available generally only on microfilm or fiche, many have now been scanned by Ancestry. Many local historical societies, state libraries and academic libraries have also scanned them, so they can be difficult to locate.