1963 Press Photo Thomas G. Mann United States Diplomat Mexico

Asst. Secretary of State Edwin M. Martin (left, top) urged Senate Foreign Relations Committee to ratify the so-called Chamizal Treaty turning over to Mexico a section of El Paso, Texas. With Martin are Thomas G. Mann (C), U.S. Ambassador to Mexico and . F. Friedkin, U.S. Commissioner, International Boundary and Water Commission, U.S. & Mexico. At bottom points to a map of the area that once belonged to Mexico but was left north of the Rio Grande when the river changed course a century ago.