American Cancer Society: Grief and Bereavement OR Seeking Help and Support for Grief and Loss - The American Cancer Society is the nationwide community-based voluntary health organization dedicated to eliminating cancer as a major health problem.
Cancercare: Grief and Loss - Founded in 1944, CancerCare is the leading national organization providing free, professional support services and information to help people manage the emotional, practical and financial challenges of cancer. Services include counseling and support groups over the phone, online and in-person, educational workshops, publications and financial and co-payment assistance.
CaringInfo: Grief & Loss - CaringInfo (formerly known as Caring Connections) is a national consumer education and engagement program of the National Hospice and Palliative Care Organization.
Help for Cancer Caregivers - This site is a unique collaboration of organizations with a shared goal of improving the health and well-being of the people who care for people with cancer.
MedlinePlus: Bereavement - Developed by the National Library of Medicine, this consumer health site directs the user to selected online resources on many common diseases, conditions, and concerns.
Also in Spanish.
National Cancer Institute: Grief, Bereavement, and Coping With Loss - This government site will provide you with information on the types and treatment of bereavement.
Also in Spanish.
Widowed Parent - The Widowed Parent project is committed to supporting widowed mothers and fathers with children in the home. Provides information to help both the parent's and the child's grief.