Statistics for occurrence #1 of “Mississippi River” in entry garfield-james-abram of Harper's Encyclopedia of United States History:

...ied Pizarro in the conquest of Peru, landed in Florida with a gallant array of knights and nobles, and commenced his explorations through the western wilderness. In 1541 he reached the banks of the Mississippi River , and, crossing it, pushed his discoveries westward over the great plains; but, finding neither the gold nor the South Sea of his dreams, he returned to be buried in the waters of the great river he h...
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