Another interesting article, which has been sitting around on my desk so long I can no longer remember where I got the referenfce, is "A brief history of information architecture" by Peter Morville. Morville is a librarian and one of the pioneers of IA. His book with Louis Rosenfeld, Information architecture for the World Wide Web, is one of the all-time classics and belongs in every library. The essay is a concise overview of the development and importance of the field.