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  5. Century Old Obelisks Mark U.S. Mexico Boundary Line (Old Monument No. 16)

Century Old Obelisks Mark U.S. Mexico Boundary Line (Old Monument No. 16)

Century Old Obelisks Mark U.S. Mexico Boundary Line

Old Monument No. 16, looking east, was built in the early 1850's to mark the U.S. - Mexico border. Courtesy National Archives (76-OM-1-144)

Last Modified: Mar 06, 2024