Border monuments 122 and 123, along the Arizona-Mexico border
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
Border monuments 183, 184, and 185, along the Arizona-Mexico
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
Border monuments 223, 224, and 225, along the California-Mexico border
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
Border monuments 249, 250, and 251, along the California-Mexico border
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
Boundaries between Brownsville, Texas and Matamoros, Tam. (Mexico)
Rio Grande between Matamoros, Tamaulipas showing monument on the Railroad Bridge. Available also through the Library of Congress Web site as a raster image.
Relative positions of Rio Grande near El Paso between 1852 and 1907
Public domain scan of a plan, map, diagram, free to use, no copyright restrictions - Picryl description.