American Psychological Association (APA)
APA offers information on PTSD and a Disaster Response Network, which includes more than 1,500 psychologists who volunteer to provide free, onsite mental health services to disaster survivors and the relief workers who assist them.

Gift From Within
This international organization is dedicated to those who suffer post-traumatic stress disorder (PTSD), those at risk for PTSD, and those who care for traumatized individuals. Gift From Within provides survivors and caretakers with a peer support network and develops and disseminates educational materials including videotapes, articles, and books.

International Society for Traumatic Stress Studies
The society shares information about the effects of trauma, reducing traumatic stressors, and clinical strategies. Its Web site offers journals and related resources for the public, professionals, and the media.

National Center for Post-Traumatic Stress Disorder (PTSD), U.S. Department of Veteran Affairs
The Center aims to advance the clinical care and social welfare of America's veterans through research, education, and training in the science, diagnosis, and treatment of PTSD and stress-related disorders. This Web site is provided as an educational resource concerning PTSD and other enduring consequences of traumatic stress, for a variety of audiences.

Sidran Institute
Sidran offers information to empower survivors, educate loved ones, and support clinicians. This nonprofit institute runs many programs, including Sidran Press, the Psychtrauma Infobase, and the Tamar project for treating incarcerated women suffering from trauma and abuse.