Statistics for occurrence #1 of “Captain Boutelle” in chapter 9 of Admiral David D. Porter, The Naval History of the Civil War.:

... Assistant. The Coast Survey office had abandoned its legitimate duties at the commencement of the war, and now furnished most valuable aid by sending its officers to any squadron requiring them. Captain Boutelle was invaluable to Admiral Dupont, and frequent mention is made of the honorable service he performed in piloting vessels through these intricate inlets. The reconnoissance in St. Helena Sound, by...
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