Itinerario de la espedicion de San Carlos a Monclova el viejo... 1852 AprLangberg, EmiliospaItinerary of the expedition of Col. Emilio Langberg, military inspector of Chihuahua, along the Rio Bravo border in 1851. His account describes the regions and histories of Chihuahua and Coahuila, the customs of the local Indians, and their relations with Mexico and the United States. Illustrated with three watercolors (two full pages) by Enrique Barchesky. Accompanied by seven letters (originals and copies) from Langberg to various officials recounting some concerns of the border troops