The Centers for Disease Control(CDC) - good information on Ebola, Anthrax, and other exotic potential agents.
http://www.cdc.gov/ Center for Infectious Research and Policy
http://www.cidrap.umn.edu/cidrap/
CDC Bioterrorism Preparedness and Response
http://www.bt.cdc.gov
Preparation and Planning for Bioterrorism Emergencies
http://www.bt.cdc.gov/bioterrorism/prep.asp
Medical Library Association: Bioterrorism Bibliographies & Resources
http://www.mlanet.org/resources/caring/resources.html
National Safety Council: Emergency Alert Network
http://www.nsc.org/issues/prepare.htm
North Carolina Department of Health and Human Services(DHHS)
Bioterrorism and Anthrax
http://www.epi.state.nc.us/epi/anthrax.html
MedlinePlus (from National Library of Medicine)
Anthrax
http://www.nlm.nih.gov/medlineplus/anthrax.html
Smallpox
http://www.nlm.nih.gov/medlineplus/smallpox.html
Federal Emergency Management Agency(FEMA)
http://www.fema.gov
Organization for the Prohibition of Chemical Weapons - Chemical Weapons Convention
http://www.opcw.org/