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![The boundary monument between the United States and Mexico just south of SanDiego line2065.jpg The boundary monument between the United States and Mexico just south of SanDiego](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_line2065.jpg?itok=EneC027u)
Description
The boundary monument between the United States and Mexico just south of SanDiego. This also gives a good seaward view of Tijuana Slough, now part of thethe National Estuarine Research Reserve System. In: Pacific Coast. Coast Pilotof California, Oregon, and Washington Territory.. By George Davidson, 1869. P. 8. Library Call Number VK947.D4 1869. (Image credit: Archival photograph by Mr. Steve Nicklas)