Nautical charts. Georgia, Tybee Island to Doboy Sound, topography by Coast and Geodetic Survey in 1934, hydrography by Coast and Geodetic Survey in 1925 and 1934, supplemented by surveys in dredged channels by U. S. Engineers to 1945; no. 1241. Scale naut. m.=0.9 in., scale 1: 80,000.

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