The Digital Library Content Management System
The Digital Library is built using Drupal - Open Source CMS
http://drupal.org

The Digital Library Themes and Graphics
Marinelli 3 column and tableless layout based theme
http://drupal.org/project/marinelli

Vector Social Media Icons
http://icondock.com/free/vector-social-media-icons

Tango Icon Library
http://tango.freedesktop.org/Tango_Icon_Library