Nautical charts. Gulf Coast. Galveston to Rio Grande, topography by Coast and Geodetic Surrey in 1933-39, supplemented by surveys by Geological Survey in 1930, hydrography by Coast and Geodetic Survey in 1933-39, supplemented by surveys in dredged channels by U. S. Engineers to 1940; no. 1117. [Scale 1: 461,000.]

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