Statistics for occurrence #1 of “Lieutenant-Commander Selfridge” in chapter 24 of Admiral David D. Porter, The Naval History of the Civil War.:

...wn the sharpshooters, they could clear the river of torpedoes, but not otherwise, as there were rifle-pits all along the left bank of the Yazoo, and the enemy were supplied with light artillery. At Lieutenant-Commander Selfridge 's request he was sent on this duty in the Cairo, with the Pittsburg, Lieut.-Commanding Hoel, and the ram Queen of the West, Colonel Charles Ellet, Jr., commanding. These officers were cautioned to ...
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