Art & Graphic Design   --   LC Classification - N-NX
World Arts Resources 
Graphic Design - About.com
Arts - Google
Arts - Yahoo

English   --   LC Classification - PE, PN, PR-PS  
Issues & Causes - Yahoo -- covers many topics in English 102 books  
Issues - Google  
Quick Reference -- good site for dictionaries and other basic sources 
Dictionaries - OneLook   
MLA Style - Electronic Sources -- Purdue Univ.
ConsumerSearch -- useful for feasibility studies 
Consumer Guide

Music    --   LC Classification - M-MT  
Music - Google
Music - Yahoo

Speech  --  LC Classification -- PN 4001-4500  
Communication Studies - U. of Iowa  
Communications - Yahoo
Rhetoric - Google