Internet Archive Formation 1996 Type on-line library Website www.archive.org Internet Archive headquarters is in the Presidio, a former US military base in San Francisco. The Internet Archive (IA) is a non-profit organization dedicated to maintaining an on-line library and archive of Web and multimedia resources. Located at the Presidio in San Francisco, California, this archive includes "snapshots of the World Wide Web" (archived copies of pages, taken at various points in time), software, movies, books, and audio recordings. To ensure the stability and endurance of the archive, IA is mirrored at the Bibliotheca Alexandrina in Egypt, the only library in the world with a mirror.[1] The IA makes the collections available at no cost to researchers, historians, and scholars. The Archive collaborates with institutions including the Library of Alexandria. Wayback Machine Examples from the Wayback Machine's archives: Apple Computer Amazon Microsoft BBC News Google Open Directory Wikipedia The Wayback Machine is the Internet Archive's archive of snapshots of the Web, and is maintained with content from Alexa Internet. This service allows users to see archived versions of web pages across time—what the Archive calls a "three dimensional index." Snapshots become available 6 to 12 months after they are archived. As of 2006 the Wayback Machine of persons who do not want their materials in