Earley & Associates Blog posting by John Heffernan

http://www.earley.com/blog/avoiding-metadata-chaos-integrating-enterprise-metadata-taxonomies

Earley & Associates Blog Posting by John Heffernan: http://www.earley.com/blog/what-you-need-know-end-information-chaos 

"This detailed book is a "how-to" guide to building controlled vocabulary tools, cataloging and indexing cultural materials with terms and names from controlled vocabularies, and using vocabularies in search engines and databases to enhance discovery and retrieval online."
http://www.getty.edu/research/publications/electronic_publications/intro_controlled_vocab/index.html 
Author: Patricia Harpring
Series edited by Murtha Baca
Year: 2010Publisher: Getty Publications