Statistics for occurrence #1 of “Portsmouth” in chapter 2 of Admiral David D. Porter, The Naval History of the Civil War.:

...ions of the heavy guns, but with a few exceptions these attempts were failures. It was a beautiful starlight night, April 20, when all the preparations were completed. The people of Norfolk and Portsmouth were wrapped in slumber, little dreaming that in a few hours the ships and public works which were so essential to the prosperity of the community would be a mass of ruins, and hundreds of people wou...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Portsmouth (New Hampshire, United States) 470 0 134 0 0 user votes
Portsmouth (United Kingdom) 107 0 13 0 0 user votes
Portsmouth (Dominica) 0 0 0 0 0 user votes
Portsmouth (Iowa, United States) 0 0 0 0 0 user votes
Portsmouth (Kentucky, United States) 0 0 0 0 0 user votes
Portsmouth (Virginia, 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.