Statistics for occurrence #1 of “Mattapony Rivers” in chapter 36 of Admiral David D. Porter, The Naval History of the Civil War.:

...inola's testimony in regard to gallant conduct of Navy. Lieutenant French's expedition. important captures. General Dix evacuates West Point, covered by gun-boats. expeditions up North, York, and Mattapony Rivers . cutting out of Confederate steamer Kate from under guns of Fort Fisher. acts of bravery displayed. attempt to destroy steamer Hebe. Lieutenant Cushing cuts out and destroys blockade-runner Alex...
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