Statistics for occurrence #1 of “Merrimac River” in chapter 2 of The writings of John Greenleaf Whittier, Volume 6.:

...and antiquarian, and one of the earliest advocates of slave emancipation: May his memory be kept green, to use the words of Judge Sewall, so long as Plum Island keeps its post and a sturgeon leaps in Merrimac River . Amesbury, 6th Month, 1885. To Rev. Charles Wingate, Hon. James H. Carleton, Thomas B. Garland, Esq., Committee of Students of Haverhill Academy: dear friends,—I was most a...
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