Statistics for occurrence #1 of “Middlesex County” in chapter 1 of Medford Historical Society Papers, Volume 15.:

... for several years. Lorin Low Dame, whose quickening power guided the high school for twenty-seven years, spent his leisure in adding to the world's knowledge of flowers and trees. The Flora of Middlesex County , Typical Elms and Other Trees of Massachusetts and the Hand-book of the Trees of New England, with Ranges throughout the United States and Canada, are valuable monuments to his exact observation and...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Middlesex County (Massachusetts, United States) 213 2 1 0 0 user votes
Middlesex County (Virginia, United States) 131 0 3 0 0 user votes
Middlesex County (Connecticut, United States) 0 0 0 0 0 user votes
Middlesex County (New Jersey, 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.