California Sinus Centers -- I have heard they do well with treatment of steroid-dependent anosmia.  One patient reported great success when following their advice to irrigate with saline to which budesonide ( Pulmicort, ) was added.

Henkin's Taste & Smell Clinic -- in DC

Hirsch's Smell & Taste Treatment/Research Foundation -- in Chicago - web pages give lots of definitions and some interesting facts (such as 4 million in US are anosmic)

Tichenor's Sinusitis Page - Great page with lots of documents, including images (sinus CT scans).