Black and white photographs of monuments and characteristic scenes along the boundary between the United States and Mexico west of the Rio Grande River. Includes captions in English and Spanish.

Report documenting a four-year project to survey and re-mark the boundary between the United States and Mexico west of the Rio Grande, including text of various relevant treaties and conventions, documentation regarding astronomical determinations and geodesy, explanations of the surveying methods, descriptions of topography, and various other relevant information along with photographs, data tables, and supplementary illustrations.