Statistics for occurrence #1 of “Massachusetts” in chapter 9 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 2:

...ficers of colored regiments, although there are doubtless records showing the regiments from which they were taken, whenever they were thus transferred for promotion. Where such transfers were from Massachusetts regiments, it often appears on their rolls, though sometimes in inaccurate shape. But the many officers who were taken from civil life had probably no record, made of their birthplaces; and these i...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Massachusetts (Massachusetts, United States) 30,598 12,758 0 0 0 user votes

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