From the Digital Library of Georgia:
The Digital Library of Georgia has just made Sanborn fire insurance maps produced between 1923-1941 for 39 Georgia towns and cities in 35 counties freely available online. The maps, which are now in the public domain, can be retrieved [online], and complement the DLG’s existing collection of the University of Georgia Map and Government Information Library’s.
539 Sanborn maps dating from 1884-1922 that have been available since 2005. The DLG has also upgraded its image viewer, which will allow better access and improved navigation to the new and older Sanborn images from this collection.