Posadas vs Rancho Cucamonga

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Rancho Cucamonga was a 13,045-acre (52.79 km2) Mexican land grant in present-day San Bernardino County, California, given in 1839 to the dedicated soldier, smuggler and politician Tiburcio Tapia by Mexican governor Juan Bautista Alvarado.

The grant formed parts of present-day Rancho Cucamonga and Upland. It extended easterly from San Antonio Creek to what is now Hermosa Avenue, and from today's Eighth Street to the mountains.

Source: Wikipedia