Statistics for occurrence #1 of “Commander Porter” in chapter 18 of Admiral David D. Porter, The Naval History of the Civil War.:

...l, after setting fire to the Louisiana, transferred his crew to a river steamer, and made for the opposite bank, a mile or so above the forts. As soon as General Duncan had left the Harriet Lane, Commander Porter , to whom Mitchell's movements had been reported. ordered Lieutenant Wainwright to get under way and beat to quarters Steering directly for the vessel carrying Mitchell's flag, the Harriet Lane sent...
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