Statistics for occurrence #1 of “Portsmouth” in alphabetic letter M, entry group 5, entry matthews-edward of Harper's Encyclopedia of United States History:

...less than 130 merchant vessels in the James and Elizabeth rivers, an unfinished Continental frigate on the stocks at Portsmouth, and eight ships-ofwar on the stocks at Gosport, a short distance above Portsmouth , where the Virginians had established a navy-yard. So sudden and powerful was the attack, that very little resistance was made by Fort Nelson, below Portsmouth, or by the Virginia militia. Matthe...
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.