Statistics for occurrence #1 of “Plymouth” in chapter 41 of Admiral David D. Porter, The Naval History of the Civil War.:

...oved, the obstructions had no power to delay the advance of the Confederate vessels. In response to a resolution of the House of Representives, calling for information in regard to the capture of Plymouth through want of assistance from the Navy, the Secretary of the Navy sent to the Speaker copies of a number of communications, among them the following: Navy Department, September 17, 1863. ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Plymouth (United Kingdom) 180 0 14 0 0 user votes
Plymouth (Michigan, United States) 3 0 1 0 0 user votes
Plymouth 2 0 0 0 0 user votes
Plymouth (California, United States) 0 0 0 0 0 user votes
Plymouth (Delaware, United States) 0 0 0 0 0 user votes
Plymouth (Florida, United States) 0 0 0 0 0 user votes
Plymouth (Illinois, United States) 0 0 0 0 0 user votes
Plymouth (Iowa, United States) 0 0 0 0 0 user votes
Plymouth (Iowa, United States) 0 0 0 0 0 user votes
Plymouth (Kansas, United States) 0 0 0 0 0 user votes
Plymouth (Maine, United States) 0 0 0 0 0 user votes
Plymouth (Massachusetts, United States) 0 0 0 0 0 user votes
Plymouth (Minnesota, United States) 0 0 0 0 0 user votes
Plymouth (Mississippi, United States) 0 0 0 0 0 user votes
Plymouth (Missouri, United States) 0 0 0 0 0 user votes
Plymouth (Nebraska, United States) 0 0 0 0 0 user votes
Plymouth (Ohio, United States) 0 0 0 0 0 user votes
Plymouth (Pennsylvania, United States) 0 0 0 0 0 user votes
Plymouth (Trinidad and Tobago) 0 0 0 0 0 user votes
Plymouth (Utah, United States) 0 0 0 0 0 user votes
Plymouth (Virginia, United States) 0 0 0 0 0 user votes
Plymouth (Washington, United States) 0 0 0 0 0 user votes
Plymouth (West Virginia, United States) 0 0 0 0 0 user votes
Plymouth (Wisconsin, 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.