Statistics for occurrence #1 of “Grand Gulf” in chapter 28 of Admiral David D. Porter, The Naval History of the Civil War.:

...der Murphy, Lieutenant-Commanders Shirk and Owen, Lieutenants-Commanding Hoel and Wilson, some of whom had already distinguished themselves on the upper Mississippi. The remarks on this battle of Grand Gulf by military historians show how reluctant they are to give the Navy credit. The following quotation from a well known writer, is an instance in point. Speaking of Grand Gulf he says: The ves...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Grand Gulf (Mississippi, United States) 858 86 40 0 0 user votes
Grand Gulf (Missouri, 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.