William H. Prescott describes Mexico as being part of North America.
William H. Prescott, History of the Conquest of Mexico, 3 vols. (New York: Harper & Brothers, 1843), 1:10–11, 71–72, 222–23
The soil, once carpeted with a beautiful verdure, and thickly sprinkled with stately trees, is often bare, and, in many places, white with the incrustation of salts, caused by the draining of the waters. Five lakes are spread over the Valley, occupying one tenth of its surface. On the opposite borders of the largest of these basins, much shrunk in its dimensions since the days of the Aztecs, stood the cities of Mexico and Tezcuco, the capitals of the two most potent and flourishing states of Anahuac, whose history, with that of the mysterious races that preceded them in the country, exhibits some of the nearest approaches to civilization to be met with anciently on the North American continent.
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An hidalgo of Cuba, named Hernandez de Cordova, sailed with three vessels on an expedition to one of the neighbouring Bahama Islands, in quest of Indian slaves. (February 8, 1517.) He encountered a succession of heavy gales which drove him far out of his course, and at the end of three weeks he found himself on a strange and unknown coast. On landing and asking the name of the country, he was answered by the natives, “Tectetan,” meaning “I do not understand you,” — but which the Spaniards, misinterpreting into the name of the place, easily corrupted into Yucatan. Some writers give a different etymology. Such mistakes, however, were not uncommon with the early discoverers, and have been the origin of many a name on the American continent.