Statistics for occurrence #1 of “Mound City” in chapter 13 of Admiral David D. Porter, The Naval History of the Civil War.:

... the navy yard being literally afloatin wharf boats, old steamers, tugs, flat-boats, or even rafts, as the government owned no land at that point; but when the station was subsequently established at Mound City , just above Cairo, the Union exulted in the possession of a real navy-yard of some ten acres, which, although sometimes under water from freshets, soon grew to a respectable size. although its mach...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Mound City (Illinois, United States) 320 18 22 0 0 user votes
Mound City (Kansas, United States) 20 0 4 0 0 user votes
Mound City (Mississippi, United States) 0 0 0 0 0 user votes
Mound City (Mississippi, United States) 0 0 0 0 0 user votes
Mound City (Missouri, United States) 0 0 0 0 0 user votes
Mound City (South Dakota, United States) 0 0 0 0 0 user votes
Mound City (Texas, United States) 0 0 0 0 0 user votes
Mound City (Utah, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.