Lookup

general reference
Bartles access to book references
RefDesk general reference

dictionaries/glossaries
Bloomberg Tools glossary of financial terms
Miriam-Webster standard dictionary
Pro-Se Handbook glossary of legal terms

on-line libraries
Duke University general library access
Internet Public Library gateway to resources (U of Michigan)
Library of Congress official repository for the U.S.
Library Servers gateway to world on-line libraries
University of Chicago general library access