Statistics for occurrence #1 of “Mystic” in chapter 20 of Medford Historical Society Papers, Volume 1.:

...urden-probably not a half dozen of them reached 200 tons. To Governor Winthrop belongs the honor of building the first vessel whose keel was laid in the colony. It was built on the banks of the Mystic , probably not far from the governor's house, at the Ten Hills. It was a bark of 30 tons, built of locust cut on the governor's farm, and was called the Blessing of the Bay. It was launched July 4...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Mystic (California, United States) 2 0 0 0 0 user votes
Mystic (Georgia, United States) 1 0 1 0 0 user votes
Mystic (Colorado, United States) 0 0 0 0 0 user votes
Mystic (Iowa, United States) 0 0 0 0 0 user votes
Mystic (Kentucky, United States) 0 0 0 0 0 user votes
Mystic (Louisiana, United States) 0 0 0 0 0 user votes
Mystic (Missouri, 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.