Statistics for occurrence #1 of “Essex County” in chapter 14, page 170 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Condensed history of regiments.:

...–––––––––2,552 The let Mass. Heavy Artillery was recruited as the 14th Mass. Infantry in the spring of 1861, most of its members being from Essex County ; it was mustered into service July 5, and left the State August 7. Its first colonel was a West Point graduate, and had served in the Florida Indian wars. It served for the remainder of the year ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Essex County (New York, United States) 46 2 14 0 0 user votes
Essex County (Virginia, United States) 273 8 41 0 0 user votes
Essex County (Massachusetts, United States) 146 2 8 0 0 user votes
Essex County (New Jersey, United States) 0 0 0 0 0 user votes
Essex County (Vermont, 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.