Statistics for occurrence #1 of “Portsmouth” in entry norfolk-destruction-of of Harper's Encyclopedia of United States History:

...7,000,000. Two of the sunken vessels, the Merrimac and Plymouth, which were not consumed, were afterwards raised by the Confederates and converted into powerful iron-clad vessels of war. Norfolk, and Portsmouth opposite, and old Fort Norfolk, on the river-bank below, were taken possession of by the Confederates. The possession of these places and of Harper's Ferry were important acquisitions for the Confe...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Portsmouth (New Hampshire, United States) 470 225 134 39 0 user votes
Portsmouth (United Kingdom) 107 15 13 5 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.