The largest collection of maps for Georgia is found at the Georgia Surveyor General office at the Georgia Department of Archives and History. For information about this collection see:
Blake, Janice Gayle. Pre-Nineteenth Century Maps in the Collection of the Georgia Surveyor General Department. Atlanta, Georgia: Surveyor General Department, 1976.
Johnsen, Margaret A. Nineteenth Century Maps in the Collection of the Georgia Surveyor General Department. Atlanta, Georgia: Surveyor General Department, 1981.
The Family History Library has a series of modern maps from the Surveyor General office (FHL films 465171-2), a few colonial maps, and city ward maps for Atlanta in 1888 (FHL film 1377700). Also see James C. Bonner, Atlas for Georgia History (Milledgeville, Georgia: Georgia College Duplicating Department, 1969; FHL book 975.8 E7b).
Maps that show county formation are found in Pat Bryant, Georgia Counties: Their Changing Boundaries, Second Edition, revised by Ingrid Shields (Atlanta, Georgia: State Printing Office, 1983; FHL book 975.8 E3b).
Modern city, county, and state maps can be purchased from:
Georgia Department of Transportation
Two Capitol Square
Atlanta, GA 30334