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Genealogy: Finding Your Ancestors Online: Maps & Land

A guide to genealogy resources on the Web and in the Cornell University Library

Historical Geospatial Research

Land Ownership Maps

These maps of counties and towns from the mid-nineteenth to early twentieth century show who actually owned property. Now available online through Ancestry.

Sanborn Map Collection Available through Cornell or a local public library
A collection of historic fire insurance maps. Detailed maps of thousands of localities in the US over successive years.

Cornell Library Map Collection
Located in the lower level of Olin Library. About 250,000 maps, many historic. Website includes many freely available online mapping tools and sources.

Deeds, Patents, and Land Records

About the Bureau of Land Management records

Useful explanation. To locate persons who homesteaded or took out land patents:
BLM Search.

Note: Resources marked with are restricted to subscribers, either through Cornell University or your local public library.