Chemistry Safety Manual:
Manual for the University of Bristol School of Chemistry.
http://www.chm.bris.ac.uk/safety/safehome.htm
Internet MSDS and Hazardous Chemical Archives:
Large set of links, mainly to various university safety pages,
focusing on chemical safety and awareness.
http://hazard.com/msds/links.html
Chem Safety Graphics:
Index of free chemical safety graphics.
http://siri.org/graphics/