Library of Congress—American Memory
American Memory provides free and open access through the Internet to written and spoken words, sound recordings, still and moving images, prints, maps, and sheet music that document the American experience. Focus is mainly the history of the United States, but a search on the keywords “Mexico and border” provides access to more than 500 primary historical documents, photographs, maps, recordings, etc.
El proyecto “La Memoria Americana” provee acceso abierto a documentos, grabaciones, imagenes fotográficos y video, mapas, música, etc. de la historia documental de los Estados Unidos. Una busqueda de “Mexico and border” (por ejemplo) provee mas de 500 recursos báscios para la investigación, como mapas, fotos, etc.