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

...ursuance of this order, Capt. Thomas Prentiss (who was a person civil and friendly to those Indians), with a party of horse, was commanded to bring them down speedily to a place called the Pines upon Charles River , about two miles above Cambridge, where boats were appointed to be in readiness to take them on board, and take them to the aforesaid island. .... Good Mr. Eliot, that faithful instructor and teacher...
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.