We are looking to develop the sites built with Drupal page. We already have sites by type: http://groups.drupal.org/drupal-showcase-by-type But we need a list of sites by industry with an emphasis on case studies.
Non-profit
Drupal non-profit slideshow, please recommend sites
Education
Libraries
Drupal lib list
Library Group roster of sites
Publishing
Media
Government
http://groups.drupal.org/government-sites