Statistics for occurrence #1 of “Charles River” in chapter 21 of Lucius R. Paige, History of Cambridge, Massachusetts, 1630-1877, with a genealogical register:

... Charles River
Indians. Squa Sachem. tribe near Mystic Pond. Indian titles purchased. fence to secure the Indians' corn. Cutshamakin...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Charles River (Maine, United States) 0 0 0 0 0 user votes
Charles River (Massachusetts, 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.