OSISA

The Open Society Initiative for Southern Africa was stuck way back on Drupal 4.6 - three versions behind.

Geoff Hankerson brought them all way to Drupal 6.2. This included replacing old modules with current ones, and moving to a CCK-based approach for content types.

http://www.osisa.org/

Goodreads Bookshelf

Drupal's Building Blocks: Quickly Building Web Sites with CCK, Views, and Panels Earl Miles
Drupal 6 JavaScript and jQuery Matt Butcher
Neuromancer William Gibson