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Luis Antonio Menchaca's map of San Antonio and surrounding area as it appeared in 1764. Map courtesy of the Carter Brown Library at Brown University.

Luis Antonio Menchaca’s map of San Antonio and surrounding area as it appeared in 1764. Map courtesy of the Carter Brown Library at Brown University.

Luis Antonio Menchaca’s map of San Antonio and surrounding area as it appeared in 1764. Map courtesy of the Carter Brown Library at Brown University.