American Lung Association - http://www.lungusa.org/

California Lung Association - http://www.californialung.org/

Centers for Disease Control & Prevention, Asthma & Allergies - http://www.cdc.gov/health/asthma.htm

Find asthma-friendly products, such as pillows, toys and vacuum cleaners -
http://www.asthmafriendly.com/asthma-products.html

Information about asthma from MayoClinic.com
http://www.mayoclinic.com/health/asthma/AS99999