Georgia. Department of Natural Resources. Geologic and Water Resources Division. "Okefenokee Swamp, 1977." University of Georgia. Map and Government Information Library. 1977, https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bn200-pg3-bm1-b1977-bo37.

Georgia. Department of Natural Resources. Geologic and Water Resources Division (1977). Okefenokee Swamp, 1977. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bn200-pg3-bm1-b1977-bo37

Georgia. Department of Natural Resources. Geologic and Water Resources Division. "Okefenokee Swamp, 1977." 1977. October 22, 2026. https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bn200-pg3-bm1-b1977-bo37.