San Francisco Suicide Prevention is the oldest community-based telephone crisis center in the United States. Founded in 1962 by a journalist from the British Broadcasting Corporation, the organization adopted a crisis management model developed by the Samaritans Centers in Great Britain and Europe. To this day the agency trains local volunteers who provide suicide prevention and crisis intervention services to callers. Over 500 other crisis centers across the United States now utilize the same concept.
The information above can be found on the official website of San Francisco Suicide Prevention. For more details about the organization and to find out how you can volunteer, please visit their website: http://www.sfsuicide.org