Search over 10,000 libraries, including museum & special collections, worldwide. Type in your individual, group, or organization's name, then check the box for "Archival Materials" to limit the search to archives. The link provided makes it easier to search for archival material, but you might also try: www.worldcat.org
A valuable source for tracking items that are published on a regular basis, such as consumer and trade magazines, scholarly journals, newsletters, newspapers, and monographic series and electronic publication. Each item is highly detailed, showing a full description of the periodical, alternative formats of the periodical, publisher and ordering information, and reviews.
This is a list of national libraries of the world. A national library is a library specifically established by the government of a nation to serve as the preeminent repository of information for that country.
The Latin American Open Archives Portal is a project of the Latin Americanist Research Resources Project - LARRP, in collaboration with the Latin American Network Information Center - LANIC, to improve access to social sciences grey literature produced in Latin America. The portal provides access to working documents, pre-prints, research papers, statistical documents, and other difficult-to-access materials from the "deep Web." Typically, this content is published by research institutes, non-governmental organizations, and peripheral agencies that are not controlled by commercial publishers.