Ohio River between Mound City and Cairo / surveyed by the party of F.H. Gerdes, asst. assigned by A.D. Bache, Supdt. U.S. Coast Survey to act under orders of Rear Admiral D.D. Porter, U.S.N., commanding Mississippi Squadron.
15814335
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Beinecke Rare Book and Manuscript Library > Ohio River between Mound City and Cairo / surveyed by the party of F.H. Gerdes, asst. assigned by A.D. Bache, Supdt. U.S. Coast Survey to act under orders of Rear Admiral D.D. Porter, U.S.N., commanding Mississippi Squadron.