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Library Research Guides

Sanborn Fire Insurance Maps

An introduction and guide to finding and using Sanborn fire insurance maps at UM and elsewhere.

Sanborn Maps Online

The ProQuest Collection of Sanborn Maps consists of "more than 660,000 large-scale maps of more than 12,000 American towns and cities." Users can manipulate the maps by magnifying and zooming in on specific areas

This online collection is accessible to University of Michigan faculty, staff and students only.

Sanborn Maps Geo Edition

The ProQuest Sanborn Maps Geo Edition "provides digital access to thousands of large-scale maps of American towns and cities, searchable by address and GPS coordinates." Users can find Sanborn maps by clicking a location on a current Google map, which generates georeferenced Sanborn maps that cover that location.

This online collection is accessible to University of Michigan faculty, staff and students only.

Purchasing Sanborn Maps

You can purchase current Sanborn Maps though the Sanborn website.

Obtaining Sanborn Maps Not Held by UM

Detroit Public Library
The Detroit Public Library houses Sanborn fire insurance maps for Detroit and other Michigan cities. For more information about available holdings, contact the Burton Historical Collection, which is located at the Main Library.

Center for Research Libraries
The Center for Research Libraries holds microfilm copies of all Sanborn fire insurance maps indexed in Fire Insurance Plans in the Library of Congress: A Checklist (Clark Library Z 6026 .I7 U541). They may be borrowed by UM affiliates through MLibrary Interlibrary Loan. On your request, please indicate the entry number, city name, and dates of the maps, and volume numbers from this publication.