Photographs show border monument at 249 in the Marron Valley (+32° 33' 51.42", -116° 46' 18.70'), border monument 250 near Cañon del Padre (+32° 33' 42.96", -116° 47' 58.86"), and border monument 251 in San Die More
Photographs show border monument 183 (+32° 8' 33.93", -113° 39' 53.40"), border monument 184 (+32° 9' 20.96", -113° 42' 24.25"), and border monument 185 (+32° 10' 10.96", -113° 45' 4.86") near the Reserva de Bi More
Photographs show border monument 223 (+32° 39' 16.31", -115° 38' 9.27"), border monument 224 (+32° 38' 57.48", -115° 42' 19.85"), and border monument 225 (+32° 38' 52.07", -115° 43' 31.61") near Mexicali, which More
Photographs show border monument 122 (N31°19.965' W110°56.498') and border monument 123 (N31°19.962' W110°57.710') near Nogales, which were photographed as part of the United States-Mexico Boundary Survey. In More
Rio Grande between Matamoros, Tamaulipas showing monument on the Railroad Bridge. Available also through the Library of Congress Web site as a raster image.
Public domain scan of a plan, map, diagram, free to use, no copyright restrictions - Picryl description.