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 Diego County (+32° 33' 22.86", -116° 51' 56.88"), which were photographed as part of the United States-Mexico Boundary Survey.

In: Photographic views showing monuments marking the boundary between the United States and Mexico from the Rio Grande to the Pacific Ocean. Taken under the direction of the U.S. Section of the International Boundary Commission, 1892-1894, volume 3.