Statistics for occurrence #1 of “Lieutenant-Commander Walker” in chapter 26 of Admiral David D. Porter, The Naval History of the Civil War.:

...it had at first a fall of nine feet. In the mean time gun-boats were detailed and prepared for the expedition. These vessels were the Chillicothe, Lieutenant-Commander Foster, the Baron DeKalb, Lieutenant-Commander Walker , the tinclad Rattler, Lioness (ram) and two other light draft vessels. All were under the command of Lieutenant-Commander Watson Smith, who had instructions to open the way to the Yazoo River and d...
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