Passe A Loutre, Mississippi Delta, Louisiana / "Triangulation and topography by F.H. Gerdes, Assist.; hydrography by the party under the command of Lieut. Comdg. J.J. Guthrie, U.S.N. Assist."
From Louisiana (In 5 layers) Depicts: 1860 Last modified 7 months ago. 3 control points.
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