[Discover] Welcome to The Internet Archive Wayback Machine http://web.archive.org/collections/web.html
(search history archives reference) 
[Discover] The Internet Archive http://www.archive.org/index.php (media library reference music)
[Discover] Rare Book Room http://www.rarebookroom.org/ (books literature reference history)
[Discover] SlideShare http://www.slideshare.net/ (presentation collaboration presentations sharing)
[Discover] Find A Grave - Millions of Cemetery Records http://www.findagrave.com/ (history cemeteries grave reference)
[Discover] DPChallenge Galleries http://www.dpchallenge.com/photo_gallery.php (photography photos photo gallery)
[Discover] The Web Developer's List of Resources http://www.devlisting.com/ (resources webdesign design reference)
[Discover] Einstein Archives Online http://www.alberteinstein.info/ (science einstein history physics)
[Discover] U B U W E B http://www.ubu.com/ (art film video media)
[Discover] Liam’s Pictures from Old Books http://www.fromoldbooks.org/ (books history free reference)
[Discover] The Internet Archive http://www.archive.org/index.php (media library reference music)
[Discover] Rare Book Room http://www.rarebookroom.org/ (books literature reference history)
[Discover] SlideShare http://www.slideshare.net/ (presentation collaboration presentations sharing)
[Discover] Find A Grave - Millions of Cemetery Records http://www.findagrave.com/ (history cemeteries grave reference)
[Discover] DPChallenge Galleries http://www.dpchallenge.com/photo_gallery.php (photography photos photo gallery)
[Discover] The Web Developer's List of Resources http://www.devlisting.com/ (resources webdesign design reference)
[Discover] Einstein Archives Online http://www.alberteinstein.info/ (science einstein history physics)
[Discover] U B U W E B http://www.ubu.com/ (art film video media)
[Discover] Liam’s Pictures from Old Books http://www.fromoldbooks.org/ (books history free reference)