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

...nd, knowing that the Federals had no vessel that could compete with her, it was arranged to fit out an expedition of Confederate soldiers, which, in conjunction with the ram, should make a descent on Plymouth . The United States Government attached considerable importance to the possession of Plymouth as a base for Army operations. Two or three fortifications had been erected and well armed, and thes...
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.