Statistics for occurrence #1 of “Merrimac River” in entry salem-ma of Harper's Encyclopedia of United States History:

...), and John Endicott was chosen, by a new company of adventurers, to lead emigrants thither and be chief manager of the colony. A grant of land, its ocean line extending from 3 miles north of the Merrimac River to 3 miles south of the Charles River, and westward to the Pacific Ocean, was obtained from the council of New England, March 19, 1628, and in June John Endicott, one of the six patentees, sailed fo...
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