Statistics for occurrence #1 of “Cairo, Ill.” in chapter 14 of Admiral David D. Porter, The Naval History of the Civil War.:

... Cairo, Ill.
Commanding positions of forts Henry and Donelson. Grant given permission to attempt the capture of the forts. Foote...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Cairo, Ill. (Illinois, United States) 3,037 88 289 6 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.