Leticia Leyva
BIBLIOTECA VIRTUAL. Temas de trabajo. Otros intereses. Tecnicas de inestigacion historica. Los profecionales en historia. Fuentes de acceso libre. Docencia: Programa de Licenciatura en Historia. Letras Libres - Cultura, literatura, poesía, ensayo, política, crítica. Recursos/ formación y práctica profesional. BIBLIOTECAS. Inicio Biblioteca Digital Mundial.
Biblioteca de México. Mapoteca Manuel Orozco y Berra (SAGARPA) Welcome to Open Library (Open Library) Biblioteca Virtual Miguel de Cervantes. Biblioteca Digital Mexicana - Conaculta. Biblioteca CONACULTA. Internet Archive. Additional collections of scanned books, articles, and other texts (usually organized by topic) are presented here.
The American Libraries collection includes material contributed from across the United States. Institutions range from the Library of Congress to many local public libraries. As a whole, this collection of material brings holdings that cover many facets of American life and scholarship into the public domain.