This copy of the 1782 Pantoja Map shows San Diego Bay and the international boundary line south of the bay agreed to by Mexico and the United States in 1849.
Andrew B. Gray was the surveyor for the U.S. side of the Boundary Joint Commission in 1849. [See biographical sketch.]
Andrew B. Gray's map of San Diego also shows the U.S./Mexico boundary one marine league south of San Diego Bay.
The boundary marker at the line separating the U.S. and Mexico was erected in the 1880s.
At the base of the U.S./Mexico boundary marker the important "initial point" of the survey was inscribed in both English and Spanish.
