A little known fact is that there is a mirror of the Wayback Machine hosted by [The Bibliotheca Alexandrina: http://www.bibalex.org/isis/frontend/archive/archi

A little known fact is that there is a mirror of the Wayback Machine hosted by [The Bibliotheca Alexandrina: http://www.bibalex.org/isis/frontend/archive/archive_web.aspx http://www.bibalex.org/isis/frontend/archive/archive_web.asp... I have sometimes had luck retrieving pages from this mirror that were unavailable (or returned errors) in the main site.