Listed below are some sites of interest:
Susan G. Komen Breast Cancer Foundation http://www.komen.org
V Foundation for Cancer Research http://www.jimmyv.org
American Cancer Society http://www.cancer.org
NIH Website http://www.nih.gov
Mary Kay Ash Charitable Foundation http://www.mkacf.org/
Avon Breast Cancer Crusade http://www.avoncompany.com/women/avoncrusade